/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:29:48,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:29:48,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:29:48,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 20:29:48,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:29:48,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:29:48,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:29:48,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:29:49,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:29:49,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:29:49,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:29:49,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:29:49,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:29:49,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:29:49,041 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:29:49,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:29:49,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:29:49,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:29:49,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:29:49,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:29:49,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:29:49,044 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:29:49,044 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:29:49,045 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:29:49,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:29:49,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:29:49,045 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:29:49,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:29:49,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:29:49,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:29:49,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:29:49,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:29:49,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:29:49,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:29:49,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:29:49,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:29:49,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:29:49,048 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:29:49,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:29:49,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:29:49,048 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:29:49,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:29:49,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:29:49,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:29:49,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:29:49,553 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:29:49,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-10-13 20:29:49,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defe0044c/72d9e6bf6d634392ad667d1619f6969a/FLAGd248a0043 [2021-10-13 20:29:50,289 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:29:50,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-10-13 20:29:50,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defe0044c/72d9e6bf6d634392ad667d1619f6969a/FLAGd248a0043 [2021-10-13 20:29:50,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defe0044c/72d9e6bf6d634392ad667d1619f6969a [2021-10-13 20:29:50,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:29:50,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:29:50,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:29:50,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:29:50,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:29:50,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:29:50" (1/1) ... [2021-10-13 20:29:50,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a232df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:50, skipping insertion in model container [2021-10-13 20:29:50,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:29:50" (1/1) ... [2021-10-13 20:29:50,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:29:50,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:29:50,956 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2600,2613] [2021-10-13 20:29:50,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:29:50,993 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:29:51,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2600,2613] [2021-10-13 20:29:51,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:29:51,082 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:29:51,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51 WrapperNode [2021-10-13 20:29:51,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:29:51,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:29:51,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:29:51,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:29:51,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:29:51,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:29:51,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:29:51,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:29:51,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:29:51,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:29:51,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:29:51,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:29:51,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (1/1) ... [2021-10-13 20:29:51,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:29:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:29:51,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 20:29:51,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 20:29:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:29:51,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:29:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:29:51,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:29:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 20:29:51,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 20:29:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:29:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:29:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 20:29:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 20:29:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:29:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:29:51,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:29:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:29:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:29:51,312 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:29:51,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:29:51,931 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 20:29:51,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:29:51 BoogieIcfgContainer [2021-10-13 20:29:51,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:29:51,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:29:51,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:29:51,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:29:51,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:29:50" (1/3) ... [2021-10-13 20:29:51,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b568d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:29:51, skipping insertion in model container [2021-10-13 20:29:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:51" (2/3) ... [2021-10-13 20:29:51,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b568d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:29:51, skipping insertion in model container [2021-10-13 20:29:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:29:51" (3/3) ... [2021-10-13 20:29:51,950 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2021-10-13 20:29:51,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:29:51,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-13 20:29:51,957 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:29:52,003 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,005 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,005 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,005 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,005 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,006 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,006 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,006 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,007 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,007 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,007 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,007 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,007 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,011 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,011 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,012 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,012 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,012 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,012 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,015 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,018 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,023 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,025 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,025 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,026 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:29:52,034 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 20:29:52,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:29:52,107 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 20:29:52,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-13 20:29:52,127 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:29:52,141 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 302 flow [2021-10-13 20:29:52,144 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 302 flow [2021-10-13 20:29:52,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 302 flow [2021-10-13 20:29:52,240 INFO L129 PetriNetUnfolder]: 16/136 cut-off events. [2021-10-13 20:29:52,241 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 20:29:52,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 16/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 184 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2021-10-13 20:29:52,260 INFO L116 LiptonReduction]: Number of co-enabled transitions 3570 [2021-10-13 20:30:07,121 INFO L131 LiptonReduction]: Checked pairs total: 3492 [2021-10-13 20:30:07,121 INFO L133 LiptonReduction]: Total number of compositions: 143 [2021-10-13 20:30:07,132 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 36 transitions, 96 flow [2021-10-13 20:30:07,150 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 20:30:07,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:07,159 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 20:30:07,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:07,165 INFO L82 PathProgramCache]: Analyzing trace with hash 578, now seen corresponding path program 1 times [2021-10-13 20:30:07,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:07,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535541398] [2021-10-13 20:30:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:07,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:07,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:07,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:07,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:30:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:07,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 20:30:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:07,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:07,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:07,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535541398] [2021-10-13 20:30:07,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535541398] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:07,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:07,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 20:30:07,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835144307] [2021-10-13 20:30:07,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 20:30:07,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 20:30:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:30:07,287 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:07,307 INFO L93 Difference]: Finished difference Result 84 states and 252 transitions. [2021-10-13 20:30:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 20:30:07,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-13 20:30:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:07,322 INFO L225 Difference]: With dead ends: 84 [2021-10-13 20:30:07,322 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 20:30:07,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:30:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 20:30:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-13 20:30:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 3.452054794520548) internal successors, (252), 83 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 252 transitions. [2021-10-13 20:30:07,373 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 252 transitions. Word has length 1 [2021-10-13 20:30:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:07,373 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 252 transitions. [2021-10-13 20:30:07,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 252 transitions. [2021-10-13 20:30:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:30:07,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:07,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:30:07,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:07,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:07,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:07,589 INFO L82 PathProgramCache]: Analyzing trace with hash 567356, now seen corresponding path program 1 times [2021-10-13 20:30:07,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:07,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349619445] [2021-10-13 20:30:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:07,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:07,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:07,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:30:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:30:07,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:08,060 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:30:08,062 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-13 20:30:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:08,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:08,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:08,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349619445] [2021-10-13 20:30:08,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349619445] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:08,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:08,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:30:08,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035838501] [2021-10-13 20:30:08,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:08,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:08,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:08,227 INFO L87 Difference]: Start difference. First operand 84 states and 252 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:08,282 INFO L93 Difference]: Finished difference Result 78 states and 236 transitions. [2021-10-13 20:30:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 20:30:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:08,285 INFO L225 Difference]: With dead ends: 78 [2021-10-13 20:30:08,285 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 20:30:08,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 20:30:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-13 20:30:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 3.420289855072464) internal successors, (236), 77 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 236 transitions. [2021-10-13 20:30:08,299 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 236 transitions. Word has length 3 [2021-10-13 20:30:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:08,300 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 236 transitions. [2021-10-13 20:30:08,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 236 transitions. [2021-10-13 20:30:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:30:08,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:08,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:30:08,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:08,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:08,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash 567357, now seen corresponding path program 1 times [2021-10-13 20:30:08,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:08,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100504934] [2021-10-13 20:30:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:08,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:08,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:08,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:08,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:30:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:08,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:08,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:08,618 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:30:08,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:30:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:08,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:08,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:08,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100504934] [2021-10-13 20:30:08,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100504934] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:08,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:08,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:30:08,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124566388] [2021-10-13 20:30:08,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:30:08,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:30:08,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:08,671 INFO L87 Difference]: Start difference. First operand 78 states and 236 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) [2021-10-13 20:30:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:08,710 INFO L93 Difference]: Finished difference Result 72 states and 220 transitions. [2021-10-13 20:30:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:08,711 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 [2021-10-13 20:30:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:08,712 INFO L225 Difference]: With dead ends: 72 [2021-10-13 20:30:08,713 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 20:30:08,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 20:30:08,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 20:30:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 3.3846153846153846) internal successors, (220), 71 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 220 transitions. [2021-10-13 20:30:08,723 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 220 transitions. Word has length 3 [2021-10-13 20:30:08,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:08,723 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 220 transitions. [2021-10-13 20:30:08,724 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) [2021-10-13 20:30:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 220 transitions. [2021-10-13 20:30:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:30:08,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:08,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:30:08,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:08,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:08,939 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:08,940 INFO L82 PathProgramCache]: Analyzing trace with hash 545244014, now seen corresponding path program 1 times [2021-10-13 20:30:08,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:08,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700298687] [2021-10-13 20:30:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:08,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:08,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:08,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:08,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:30:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:08,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:30:08,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:09,196 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:30:09,196 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-13 20:30:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:09,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:09,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:09,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700298687] [2021-10-13 20:30:09,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700298687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:09,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:09,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:30:09,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101591012] [2021-10-13 20:30:09,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:09,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:09,443 INFO L87 Difference]: Start difference. First operand 72 states and 220 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:09,489 INFO L93 Difference]: Finished difference Result 66 states and 204 transitions. [2021-10-13 20:30:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:09,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 20:30:09,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:09,491 INFO L225 Difference]: With dead ends: 66 [2021-10-13 20:30:09,491 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 20:30:09,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 20:30:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-13 20:30:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 3.3442622950819674) internal successors, (204), 65 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 204 transitions. [2021-10-13 20:30:09,500 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 204 transitions. Word has length 5 [2021-10-13 20:30:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:09,500 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 204 transitions. [2021-10-13 20:30:09,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 204 transitions. [2021-10-13 20:30:09,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:30:09,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:09,501 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:30:09,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 20:30:09,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:09,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash 545244015, now seen corresponding path program 1 times [2021-10-13 20:30:09,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:09,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254862880] [2021-10-13 20:30:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:09,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:09,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:09,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:09,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:30:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:09,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:09,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:09,800 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:30:09,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:30:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:09,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:09,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:09,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254862880] [2021-10-13 20:30:09,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254862880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:09,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:09,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:30:09,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455276899] [2021-10-13 20:30:09,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:30:09,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:30:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:09,853 INFO L87 Difference]: Start difference. First operand 66 states and 204 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) [2021-10-13 20:30:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:09,878 INFO L93 Difference]: Finished difference Result 60 states and 188 transitions. [2021-10-13 20:30:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:09,878 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 [2021-10-13 20:30:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:09,880 INFO L225 Difference]: With dead ends: 60 [2021-10-13 20:30:09,880 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 20:30:09,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 20:30:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-13 20:30:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 3.2982456140350878) internal successors, (188), 59 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 188 transitions. [2021-10-13 20:30:09,887 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 188 transitions. Word has length 5 [2021-10-13 20:30:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:09,908 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 188 transitions. [2021-10-13 20:30:09,909 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) [2021-10-13 20:30:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 188 transitions. [2021-10-13 20:30:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:30:09,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:09,910 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:10,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:10,118 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:10,120 INFO L82 PathProgramCache]: Analyzing trace with hash -6500714, now seen corresponding path program 1 times [2021-10-13 20:30:10,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:10,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153819402] [2021-10-13 20:30:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:10,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:10,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:10,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:10,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:30:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:10,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:30:10,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:10,232 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:30:10,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:30:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:10,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:10,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:10,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153819402] [2021-10-13 20:30:10,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153819402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:10,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:10,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:10,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788601960] [2021-10-13 20:30:10,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:30:10,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:30:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:10,345 INFO L87 Difference]: Start difference. First operand 60 states and 188 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:10,378 INFO L93 Difference]: Finished difference Result 52 states and 156 transitions. [2021-10-13 20:30:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:10,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-13 20:30:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:10,380 INFO L225 Difference]: With dead ends: 52 [2021-10-13 20:30:10,380 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 20:30:10,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 20:30:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-13 20:30:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 3.12) internal successors, (156), 51 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 156 transitions. [2021-10-13 20:30:10,386 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 156 transitions. Word has length 7 [2021-10-13 20:30:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 156 transitions. [2021-10-13 20:30:10,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 156 transitions. [2021-10-13 20:30:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:30:10,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:10,388 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:10,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:10,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:10,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:10,602 INFO L82 PathProgramCache]: Analyzing trace with hash -6500713, now seen corresponding path program 1 times [2021-10-13 20:30:10,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:10,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063502420] [2021-10-13 20:30:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:10,604 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:10,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:10,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:10,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:30:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:10,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:10,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:10,841 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:30:10,841 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 4 case distinctions, treesize of input 28 treesize of output 58 [2021-10-13 20:30:10,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2021-10-13 20:30:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:11,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:11,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:11,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063502420] [2021-10-13 20:30:11,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063502420] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:11,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:11,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:30:11,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255227375] [2021-10-13 20:30:11,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:11,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:11,175 INFO L87 Difference]: Start difference. First operand 52 states and 156 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:11,201 INFO L93 Difference]: Finished difference Result 44 states and 124 transitions. [2021-10-13 20:30:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 20:30:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:11,202 INFO L225 Difference]: With dead ends: 44 [2021-10-13 20:30:11,203 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 20:30:11,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 20:30:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-13 20:30:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 124 transitions. [2021-10-13 20:30:11,207 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 124 transitions. Word has length 7 [2021-10-13 20:30:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:11,207 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 124 transitions. [2021-10-13 20:30:11,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 124 transitions. [2021-10-13 20:30:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:30:11,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:11,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:11,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:11,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:11,421 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:11,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1944445849, now seen corresponding path program 1 times [2021-10-13 20:30:11,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:11,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115225260] [2021-10-13 20:30:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:11,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:11,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:11,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:30:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:11,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:11,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:11,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:11,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:11,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115225260] [2021-10-13 20:30:11,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115225260] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:11,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:11,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:11,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318340428] [2021-10-13 20:30:11,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:11,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:11,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:11,575 INFO L87 Difference]: Start difference. First operand 44 states and 124 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2021-10-13 20:30:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:11,591 INFO L93 Difference]: Finished difference Result 58 states and 168 transitions. [2021-10-13 20:30:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 [2021-10-13 20:30:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:11,593 INFO L225 Difference]: With dead ends: 58 [2021-10-13 20:30:11,593 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 20:30:11,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 20:30:11,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-13 20:30:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 57 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 168 transitions. [2021-10-13 20:30:11,599 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 168 transitions. Word has length 16 [2021-10-13 20:30:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:11,600 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 168 transitions. [2021-10-13 20:30:11,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2021-10-13 20:30:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 168 transitions. [2021-10-13 20:30:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 20:30:11,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:11,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:11,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:11,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:11,819 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash -327538380, now seen corresponding path program 1 times [2021-10-13 20:30:11,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:11,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501449723] [2021-10-13 20:30:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:11,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:11,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:11,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:11,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:30:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:11,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:11,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:11,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:12,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:12,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501449723] [2021-10-13 20:30:12,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501449723] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:12,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:12,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-13 20:30:12,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797448248] [2021-10-13 20:30:12,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:30:12,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:30:12,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:12,082 INFO L87 Difference]: Start difference. First operand 58 states and 168 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-10-13 20:30:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:12,106 INFO L93 Difference]: Finished difference Result 72 states and 212 transitions. [2021-10-13 20:30:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:30:12,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 17 [2021-10-13 20:30:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:12,108 INFO L225 Difference]: With dead ends: 72 [2021-10-13 20:30:12,108 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 20:30:12,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 20:30:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 20:30:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.9859154929577465) internal successors, (212), 71 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 212 transitions. [2021-10-13 20:30:12,114 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 212 transitions. Word has length 17 [2021-10-13 20:30:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:12,115 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 212 transitions. [2021-10-13 20:30:12,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-10-13 20:30:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 212 transitions. [2021-10-13 20:30:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:30:12,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:12,116 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:12,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:12,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:12,336 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2039572743, now seen corresponding path program 2 times [2021-10-13 20:30:12,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:12,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672035393] [2021-10-13 20:30:12,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:30:12,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:12,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:12,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:30:12,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:30:12,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:12,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:12,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:30:12,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:30:12,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:12,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672035393] [2021-10-13 20:30:12,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672035393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:12,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:12,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046730346] [2021-10-13 20:30:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:12,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:12,642 INFO L87 Difference]: Start difference. First operand 72 states and 212 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) [2021-10-13 20:30:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:12,653 INFO L93 Difference]: Finished difference Result 94 states and 284 transitions. [2021-10-13 20:30:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:12,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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 [2021-10-13 20:30:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:12,656 INFO L225 Difference]: With dead ends: 94 [2021-10-13 20:30:12,656 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 20:30:12,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 20:30:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-13 20:30:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 3.053763440860215) internal successors, (284), 93 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 284 transitions. [2021-10-13 20:30:12,683 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 284 transitions. Word has length 18 [2021-10-13 20:30:12,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:12,683 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 284 transitions. [2021-10-13 20:30:12,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) [2021-10-13 20:30:12,684 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 284 transitions. [2021-10-13 20:30:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 20:30:12,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:12,685 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:12,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:12,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:12,899 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:12,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1397112298, now seen corresponding path program 1 times [2021-10-13 20:30:12,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:12,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090499969] [2021-10-13 20:30:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:12,901 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:12,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:12,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:12,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:30:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:13,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 20:30:13,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:30:13,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:30:13,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:13,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090499969] [2021-10-13 20:30:13,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090499969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:13,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:13,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-13 20:30:13,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354251451] [2021-10-13 20:30:13,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:30:13,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:30:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:13,275 INFO L87 Difference]: Start difference. First operand 94 states and 284 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2021-10-13 20:30:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:13,298 INFO L93 Difference]: Finished difference Result 116 states and 356 transitions. [2021-10-13 20:30:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:30:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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 19 [2021-10-13 20:30:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:13,300 INFO L225 Difference]: With dead ends: 116 [2021-10-13 20:30:13,301 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 20:30:13,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 20:30:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-13 20:30:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 3.0956521739130434) internal successors, (356), 115 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 356 transitions. [2021-10-13 20:30:13,309 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 356 transitions. Word has length 19 [2021-10-13 20:30:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:13,309 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 356 transitions. [2021-10-13 20:30:13,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2021-10-13 20:30:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 356 transitions. [2021-10-13 20:30:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:30:13,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:13,311 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:13,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:13,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:13,524 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1339292313, now seen corresponding path program 2 times [2021-10-13 20:30:13,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:13,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806512399] [2021-10-13 20:30:13,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:30:13,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:13,528 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:13,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:30:13,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:30:13,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:13,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:13,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:30:13,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:30:13,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:13,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806512399] [2021-10-13 20:30:13,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806512399] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:13,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:13,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:13,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188306960] [2021-10-13 20:30:13,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:13,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:13,755 INFO L87 Difference]: Start difference. First operand 116 states and 356 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 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) [2021-10-13 20:30:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:13,804 INFO L93 Difference]: Finished difference Result 164 states and 516 transitions. [2021-10-13 20:30:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 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 20 [2021-10-13 20:30:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:13,807 INFO L225 Difference]: With dead ends: 164 [2021-10-13 20:30:13,807 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 20:30:13,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:13,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 20:30:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-13 20:30:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 3.165644171779141) internal successors, (516), 163 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 516 transitions. [2021-10-13 20:30:13,816 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 516 transitions. Word has length 20 [2021-10-13 20:30:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:13,817 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 516 transitions. [2021-10-13 20:30:13,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 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) [2021-10-13 20:30:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 516 transitions. [2021-10-13 20:30:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 20:30:13,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:13,819 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:13,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:14,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:14,032 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:14,033 INFO L82 PathProgramCache]: Analyzing trace with hash 523277575, now seen corresponding path program 1 times [2021-10-13 20:30:14,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:14,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116512547] [2021-10-13 20:30:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:14,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:14,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:14,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:30:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:14,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:14,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:30:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:30:14,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:14,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116512547] [2021-10-13 20:30:14,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116512547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:14,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:14,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-13 20:30:14,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681383175] [2021-10-13 20:30:14,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:30:14,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:30:14,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:14,435 INFO L87 Difference]: Start difference. First operand 164 states and 516 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:14,469 INFO L93 Difference]: Finished difference Result 212 states and 676 transitions. [2021-10-13 20:30:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:30:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:30:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:14,472 INFO L225 Difference]: With dead ends: 212 [2021-10-13 20:30:14,472 INFO L226 Difference]: Without dead ends: 212 [2021-10-13 20:30:14,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-13 20:30:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-10-13 20:30:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.203791469194313) internal successors, (676), 211 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 676 transitions. [2021-10-13 20:30:14,484 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 676 transitions. Word has length 21 [2021-10-13 20:30:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:14,485 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 676 transitions. [2021-10-13 20:30:14,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 676 transitions. [2021-10-13 20:30:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:14,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:14,487 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:14,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:14,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:14,699 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:14,700 INFO L82 PathProgramCache]: Analyzing trace with hash 996624473, now seen corresponding path program 2 times [2021-10-13 20:30:14,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:14,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253098780] [2021-10-13 20:30:14,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:30:14,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:14,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:14,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:14,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:30:14,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:30:14,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:14,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:14,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:15,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:30:15,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:15,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253098780] [2021-10-13 20:30:15,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253098780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:15,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:15,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:30:15,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445034489] [2021-10-13 20:30:15,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:30:15,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:30:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:30:15,962 INFO L87 Difference]: Start difference. First operand 212 states and 676 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:30:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:18,462 INFO L93 Difference]: Finished difference Result 1067 states and 3643 transitions. [2021-10-13 20:30:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 20:30:18,462 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:30:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:18,475 INFO L225 Difference]: With dead ends: 1067 [2021-10-13 20:30:18,475 INFO L226 Difference]: Without dead ends: 1060 [2021-10-13 20:30:18,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2058.3ms TimeCoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 20:30:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-13 20:30:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 500. [2021-10-13 20:30:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 3.62124248496994) internal successors, (1807), 499 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1807 transitions. [2021-10-13 20:30:18,515 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1807 transitions. Word has length 22 [2021-10-13 20:30:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:18,516 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1807 transitions. [2021-10-13 20:30:18,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:30:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1807 transitions. [2021-10-13 20:30:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:18,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:18,520 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:18,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:18,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:18,734 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:18,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1685093543, now seen corresponding path program 3 times [2021-10-13 20:30:18,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:18,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594525009] [2021-10-13 20:30:18,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:30:18,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:18,737 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:18,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:30:18,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 20:30:18,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:18,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:19,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:20,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:20,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594525009] [2021-10-13 20:30:20,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594525009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:20,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:20,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:30:20,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573545202] [2021-10-13 20:30:20,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:30:20,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:30:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:30:20,161 INFO L87 Difference]: Start difference. First operand 500 states and 1807 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:23,625 INFO L93 Difference]: Finished difference Result 1529 states and 5481 transitions. [2021-10-13 20:30:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 20:30:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:30:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:23,640 INFO L225 Difference]: With dead ends: 1529 [2021-10-13 20:30:23,641 INFO L226 Difference]: Without dead ends: 1522 [2021-10-13 20:30:23,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 3057.8ms TimeCoverageRelationStatistics Valid=789, Invalid=2751, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 20:30:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-10-13 20:30:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 620. [2021-10-13 20:30:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.7140549273021) internal successors, (2299), 619 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2299 transitions. [2021-10-13 20:30:23,689 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2299 transitions. Word has length 22 [2021-10-13 20:30:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:23,689 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2299 transitions. [2021-10-13 20:30:23,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2299 transitions. [2021-10-13 20:30:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:23,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:23,692 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:23,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:23,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:23,906 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:23,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1720077631, now seen corresponding path program 4 times [2021-10-13 20:30:23,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:23,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789867778] [2021-10-13 20:30:23,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:30:23,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:23,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:23,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:30:24,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:30:24,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:24,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:24,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:25,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:25,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789867778] [2021-10-13 20:30:25,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789867778] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:25,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:25,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:30:25,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249214212] [2021-10-13 20:30:25,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:30:25,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:30:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:30:25,271 INFO L87 Difference]: Start difference. First operand 620 states and 2299 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:28,877 INFO L93 Difference]: Finished difference Result 1779 states and 6203 transitions. [2021-10-13 20:30:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 20:30:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:30:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:28,895 INFO L225 Difference]: With dead ends: 1779 [2021-10-13 20:30:28,895 INFO L226 Difference]: Without dead ends: 1772 [2021-10-13 20:30:28,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3164.1ms TimeCoverageRelationStatistics Valid=770, Invalid=3012, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 20:30:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-10-13 20:30:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 870. [2021-10-13 20:30:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.942462600690449) internal successors, (3426), 869 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3426 transitions. [2021-10-13 20:30:28,957 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3426 transitions. Word has length 22 [2021-10-13 20:30:28,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:28,957 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3426 transitions. [2021-10-13 20:30:28,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:28,958 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3426 transitions. [2021-10-13 20:30:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:28,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:28,979 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:28,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:29,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:29,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash 864682851, now seen corresponding path program 5 times [2021-10-13 20:30:29,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:29,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489861109] [2021-10-13 20:30:29,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:30:29,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:29,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:29,196 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:29,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:30:29,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:30:29,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:29,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:30:29,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:30,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:30,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:30,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489861109] [2021-10-13 20:30:30,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489861109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:30,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:30,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-13 20:30:30,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817798843] [2021-10-13 20:30:30,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 20:30:30,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 20:30:30,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:30:30,645 INFO L87 Difference]: Start difference. First operand 870 states and 3426 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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) [2021-10-13 20:30:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:37,642 INFO L93 Difference]: Finished difference Result 3751 states and 13135 transitions. [2021-10-13 20:30:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-13 20:30:37,643 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 22 [2021-10-13 20:30:37,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:37,675 INFO L225 Difference]: With dead ends: 3751 [2021-10-13 20:30:37,675 INFO L226 Difference]: Without dead ends: 3737 [2021-10-13 20:30:37,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2860 ImplicationChecksByTransitivity, 6396.1ms TimeCoverageRelationStatistics Valid=1736, Invalid=7194, Unknown=0, NotChecked=0, Total=8930 [2021-10-13 20:30:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-10-13 20:30:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 1372. [2021-10-13 20:30:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 4.200583515681984) internal successors, (5759), 1371 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 5759 transitions. [2021-10-13 20:30:37,799 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 5759 transitions. Word has length 22 [2021-10-13 20:30:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:37,801 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 5759 transitions. [2021-10-13 20:30:37,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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) [2021-10-13 20:30:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 5759 transitions. [2021-10-13 20:30:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:37,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:37,810 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:37,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-13 20:30:38,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:38,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:38,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1634060657, now seen corresponding path program 6 times [2021-10-13 20:30:38,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:38,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882645651] [2021-10-13 20:30:38,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:30:38,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:38,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:38,028 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:38,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 20:30:38,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 20:30:38,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:38,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:38,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:38,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:39,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:39,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882645651] [2021-10-13 20:30:39,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882645651] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:39,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:39,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:30:39,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454977843] [2021-10-13 20:30:39,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:30:39,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:30:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:30:39,488 INFO L87 Difference]: Start difference. First operand 1372 states and 5759 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:42,235 INFO L93 Difference]: Finished difference Result 3117 states and 12305 transitions. [2021-10-13 20:30:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:30:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:30:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:42,265 INFO L225 Difference]: With dead ends: 3117 [2021-10-13 20:30:42,266 INFO L226 Difference]: Without dead ends: 3110 [2021-10-13 20:30:42,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 2643.3ms TimeCoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 20:30:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-10-13 20:30:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 1612. [2021-10-13 20:30:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 4.248913718187461) internal successors, (6845), 1611 states have internal predecessors, (6845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 6845 transitions. [2021-10-13 20:30:42,365 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 6845 transitions. Word has length 22 [2021-10-13 20:30:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:42,366 INFO L470 AbstractCegarLoop]: Abstraction has 1612 states and 6845 transitions. [2021-10-13 20:30:42,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 6845 transitions. [2021-10-13 20:30:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:42,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:42,374 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:42,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:42,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:42,588 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:42,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1047657359, now seen corresponding path program 7 times [2021-10-13 20:30:42,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:42,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106080357] [2021-10-13 20:30:42,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:30:42,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:42,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:42,591 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:42,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 20:30:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:42,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:42,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:43,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:44,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:44,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106080357] [2021-10-13 20:30:44,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106080357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:44,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:44,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:30:44,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442390504] [2021-10-13 20:30:44,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:30:44,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:44,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:30:44,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:30:44,252 INFO L87 Difference]: Start difference. First operand 1612 states and 6845 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:48,317 INFO L93 Difference]: Finished difference Result 4589 states and 17958 transitions. [2021-10-13 20:30:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 20:30:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:30:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:48,354 INFO L225 Difference]: With dead ends: 4589 [2021-10-13 20:30:48,354 INFO L226 Difference]: Without dead ends: 4582 [2021-10-13 20:30:48,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3795.6ms TimeCoverageRelationStatistics Valid=723, Invalid=2583, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 20:30:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2021-10-13 20:30:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 1846. [2021-10-13 20:30:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 4.301355013550135) internal successors, (7936), 1845 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 7936 transitions. [2021-10-13 20:30:48,493 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 7936 transitions. Word has length 22 [2021-10-13 20:30:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:48,494 INFO L470 AbstractCegarLoop]: Abstraction has 1846 states and 7936 transitions. [2021-10-13 20:30:48,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 7936 transitions. [2021-10-13 20:30:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:48,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:48,504 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:48,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:48,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:48,718 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1937453481, now seen corresponding path program 8 times [2021-10-13 20:30:48,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:48,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209029655] [2021-10-13 20:30:48,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:30:48,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:48,721 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:48,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 20:30:49,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:30:49,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:49,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:49,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:50,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:50,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209029655] [2021-10-13 20:30:50,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209029655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:50,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:50,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:30:50,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237495452] [2021-10-13 20:30:50,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:30:50,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:30:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:30:50,412 INFO L87 Difference]: Start difference. First operand 1846 states and 7936 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:54,878 INFO L93 Difference]: Finished difference Result 4720 states and 18069 transitions. [2021-10-13 20:30:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:30:54,879 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:30:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:54,905 INFO L225 Difference]: With dead ends: 4720 [2021-10-13 20:30:54,905 INFO L226 Difference]: Without dead ends: 4706 [2021-10-13 20:30:54,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 4144.4ms TimeCoverageRelationStatistics Valid=825, Invalid=3081, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 20:30:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-10-13 20:30:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 1968. [2021-10-13 20:30:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 4.368581596339603) internal successors, (8593), 1967 states have internal predecessors, (8593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 8593 transitions. [2021-10-13 20:30:55,057 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 8593 transitions. Word has length 22 [2021-10-13 20:30:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:55,057 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 8593 transitions. [2021-10-13 20:30:55,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:30:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 8593 transitions. [2021-10-13 20:30:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:55,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:55,067 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:55,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 20:30:55,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:55,281 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1361166689, now seen corresponding path program 9 times [2021-10-13 20:30:55,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:55,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977513204] [2021-10-13 20:30:55,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:30:55,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:55,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:55,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 20:30:55,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:30:55,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:55,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:30:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:56,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:30:56,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:56,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977513204] [2021-10-13 20:30:56,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977513204] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:56,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:56,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:30:56,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031807015] [2021-10-13 20:30:56,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:30:56,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:30:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:30:56,916 INFO L87 Difference]: Start difference. First operand 1968 states and 8593 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:30:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:59,413 INFO L93 Difference]: Finished difference Result 4769 states and 18996 transitions. [2021-10-13 20:30:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 20:30:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:30:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:59,442 INFO L225 Difference]: With dead ends: 4769 [2021-10-13 20:30:59,443 INFO L226 Difference]: Without dead ends: 4762 [2021-10-13 20:30:59,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2412.3ms TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 20:30:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2021-10-13 20:30:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 2198. [2021-10-13 20:30:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2197 states have (on average 4.41647701411015) internal successors, (9703), 2197 states have internal predecessors, (9703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 9703 transitions. [2021-10-13 20:30:59,595 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 9703 transitions. Word has length 22 [2021-10-13 20:30:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:59,597 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 9703 transitions. [2021-10-13 20:30:59,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:30:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 9703 transitions. [2021-10-13 20:30:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:59,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:59,609 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:59,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:59,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:30:59,823 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:59,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1942371879, now seen corresponding path program 10 times [2021-10-13 20:30:59,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:59,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092141352] [2021-10-13 20:30:59,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:30:59,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:59,827 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:30:59,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 20:31:00,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:31:00,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:00,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:00,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:00,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:31:01,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:01,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092141352] [2021-10-13 20:31:01,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092141352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:01,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:01,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:31:01,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131485899] [2021-10-13 20:31:01,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:31:01,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:31:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:31:01,520 INFO L87 Difference]: Start difference. First operand 2198 states and 9703 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:31:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:03,851 INFO L93 Difference]: Finished difference Result 4832 states and 19624 transitions. [2021-10-13 20:31:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 20:31:03,852 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:31:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:03,877 INFO L225 Difference]: With dead ends: 4832 [2021-10-13 20:31:03,878 INFO L226 Difference]: Without dead ends: 4818 [2021-10-13 20:31:03,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2269.4ms TimeCoverageRelationStatistics Valid=424, Invalid=1136, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:31:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2021-10-13 20:31:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 2388. [2021-10-13 20:31:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2387 states have (on average 4.475073313782991) internal successors, (10682), 2387 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 10682 transitions. [2021-10-13 20:31:04,019 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 10682 transitions. Word has length 22 [2021-10-13 20:31:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:04,020 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 10682 transitions. [2021-10-13 20:31:04,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:31:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 10682 transitions. [2021-10-13 20:31:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:04,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:04,034 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:04,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-13 20:31:04,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:04,247 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash 316441863, now seen corresponding path program 11 times [2021-10-13 20:31:04,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:04,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239059042] [2021-10-13 20:31:04,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:31:04,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:04,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:04,250 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:04,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 20:31:04,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:31:04,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:04,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:04,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:05,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:06,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:06,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239059042] [2021-10-13 20:31:06,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239059042] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:06,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:06,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:06,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801111887] [2021-10-13 20:31:06,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:06,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:06,196 INFO L87 Difference]: Start difference. First operand 2388 states and 10682 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:09,980 INFO L93 Difference]: Finished difference Result 5357 states and 21969 transitions. [2021-10-13 20:31:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 20:31:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:10,004 INFO L225 Difference]: With dead ends: 5357 [2021-10-13 20:31:10,004 INFO L226 Difference]: Without dead ends: 5350 [2021-10-13 20:31:10,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3662.7ms TimeCoverageRelationStatistics Valid=681, Invalid=2289, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 20:31:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-10-13 20:31:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 2590. [2021-10-13 20:31:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2589 states have (on average 4.495944380069525) internal successors, (11640), 2589 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 11640 transitions. [2021-10-13 20:31:10,158 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 11640 transitions. Word has length 22 [2021-10-13 20:31:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:10,159 INFO L470 AbstractCegarLoop]: Abstraction has 2590 states and 11640 transitions. [2021-10-13 20:31:10,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 11640 transitions. [2021-10-13 20:31:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:10,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:10,171 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:10,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:10,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:10,386 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2044003705, now seen corresponding path program 12 times [2021-10-13 20:31:10,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:10,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714089961] [2021-10-13 20:31:10,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:31:10,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:10,389 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:10,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 20:31:10,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:31:10,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:10,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:10,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:11,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:12,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:12,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714089961] [2021-10-13 20:31:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714089961] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:12,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528657134] [2021-10-13 20:31:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:12,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:12,292 INFO L87 Difference]: Start difference. First operand 2590 states and 11640 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:17,808 INFO L93 Difference]: Finished difference Result 5827 states and 23159 transitions. [2021-10-13 20:31:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-13 20:31:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:17,836 INFO L225 Difference]: With dead ends: 5827 [2021-10-13 20:31:17,836 INFO L226 Difference]: Without dead ends: 5820 [2021-10-13 20:31:17,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 5199.9ms TimeCoverageRelationStatistics Valid=974, Invalid=3316, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 20:31:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-10-13 20:31:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 2804. [2021-10-13 20:31:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2803 states have (on average 4.534427399215127) internal successors, (12710), 2803 states have internal predecessors, (12710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 12710 transitions. [2021-10-13 20:31:18,072 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 12710 transitions. Word has length 22 [2021-10-13 20:31:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:18,073 INFO L470 AbstractCegarLoop]: Abstraction has 2804 states and 12710 transitions. [2021-10-13 20:31:18,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 12710 transitions. [2021-10-13 20:31:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:18,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:18,084 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:18,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:18,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:18,298 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1715266783, now seen corresponding path program 13 times [2021-10-13 20:31:18,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:18,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113381599] [2021-10-13 20:31:18,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:31:18,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:18,301 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:18,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 20:31:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:31:18,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:18,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:19,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:20,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:20,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113381599] [2021-10-13 20:31:20,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113381599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:20,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:20,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:20,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393250524] [2021-10-13 20:31:20,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:20,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:20,108 INFO L87 Difference]: Start difference. First operand 2804 states and 12710 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:23,699 INFO L93 Difference]: Finished difference Result 6041 states and 25180 transitions. [2021-10-13 20:31:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 20:31:23,700 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:23,717 INFO L225 Difference]: With dead ends: 6041 [2021-10-13 20:31:23,717 INFO L226 Difference]: Without dead ends: 6034 [2021-10-13 20:31:23,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 3500.0ms TimeCoverageRelationStatistics Valid=667, Invalid=2195, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:31:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2021-10-13 20:31:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 2980. [2021-10-13 20:31:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2979 states have (on average 4.55824102047667) internal successors, (13579), 2979 states have internal predecessors, (13579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 13579 transitions. [2021-10-13 20:31:23,863 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 13579 transitions. Word has length 22 [2021-10-13 20:31:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:23,864 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 13579 transitions. [2021-10-13 20:31:23,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 13579 transitions. [2021-10-13 20:31:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:23,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:23,875 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:23,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:24,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:24,090 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -723838055, now seen corresponding path program 14 times [2021-10-13 20:31:24,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:24,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497063730] [2021-10-13 20:31:24,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:31:24,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:24,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:24,093 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:24,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 20:31:24,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:31:24,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:24,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:24,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:25,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:26,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:26,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497063730] [2021-10-13 20:31:26,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497063730] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:26,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:26,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:26,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737650417] [2021-10-13 20:31:26,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:26,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:26,074 INFO L87 Difference]: Start difference. First operand 2980 states and 13579 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:29,647 INFO L93 Difference]: Finished difference Result 6026 states and 25296 transitions. [2021-10-13 20:31:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 20:31:29,648 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:29,668 INFO L225 Difference]: With dead ends: 6026 [2021-10-13 20:31:29,669 INFO L226 Difference]: Without dead ends: 6012 [2021-10-13 20:31:29,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 3440.5ms TimeCoverageRelationStatistics Valid=629, Invalid=1921, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 20:31:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2021-10-13 20:31:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 3066. [2021-10-13 20:31:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3065 states have (on average 4.592495921696575) internal successors, (14076), 3065 states have internal predecessors, (14076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 14076 transitions. [2021-10-13 20:31:29,830 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 14076 transitions. Word has length 22 [2021-10-13 20:31:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:29,830 INFO L470 AbstractCegarLoop]: Abstraction has 3066 states and 14076 transitions. [2021-10-13 20:31:29,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 14076 transitions. [2021-10-13 20:31:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:29,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:29,843 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:29,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:30,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:30,058 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:30,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:30,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1330822183, now seen corresponding path program 15 times [2021-10-13 20:31:30,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:30,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177140970] [2021-10-13 20:31:30,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:31:30,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:30,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:30,062 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:30,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 20:31:30,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:31:30,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:30,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:31,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:32,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:32,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177140970] [2021-10-13 20:31:32,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177140970] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:32,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:32,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:32,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053131577] [2021-10-13 20:31:32,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:32,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:32,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:32,086 INFO L87 Difference]: Start difference. First operand 3066 states and 14076 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:36,610 INFO L93 Difference]: Finished difference Result 6095 states and 25265 transitions. [2021-10-13 20:31:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 20:31:36,611 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:36,635 INFO L225 Difference]: With dead ends: 6095 [2021-10-13 20:31:36,636 INFO L226 Difference]: Without dead ends: 6088 [2021-10-13 20:31:36,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 4358.5ms TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 20:31:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2021-10-13 20:31:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 3204. [2021-10-13 20:31:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 3203 states have (on average 4.6356540743053385) internal successors, (14848), 3203 states have internal predecessors, (14848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 14848 transitions. [2021-10-13 20:31:36,820 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 14848 transitions. Word has length 22 [2021-10-13 20:31:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:36,820 INFO L470 AbstractCegarLoop]: Abstraction has 3204 states and 14848 transitions. [2021-10-13 20:31:36,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 14848 transitions. [2021-10-13 20:31:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:36,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:36,834 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:36,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:37,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:37,048 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1374585471, now seen corresponding path program 16 times [2021-10-13 20:31:37,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:37,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989963732] [2021-10-13 20:31:37,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:31:37,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:37,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:37,051 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:37,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 20:31:37,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:31:37,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:37,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:37,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:38,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:39,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:39,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989963732] [2021-10-13 20:31:39,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989963732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:39,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:39,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:39,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059002524] [2021-10-13 20:31:39,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:39,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:39,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:39,016 INFO L87 Difference]: Start difference. First operand 3204 states and 14848 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:43,661 INFO L93 Difference]: Finished difference Result 6470 states and 26928 transitions. [2021-10-13 20:31:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 20:31:43,664 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:43,686 INFO L225 Difference]: With dead ends: 6470 [2021-10-13 20:31:43,686 INFO L226 Difference]: Without dead ends: 6456 [2021-10-13 20:31:43,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 4471.1ms TimeCoverageRelationStatistics Valid=754, Invalid=2438, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 20:31:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-10-13 20:31:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3288. [2021-10-13 20:31:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 4.672649832674171) internal successors, (15359), 3287 states have internal predecessors, (15359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 15359 transitions. [2021-10-13 20:31:43,859 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 15359 transitions. Word has length 22 [2021-10-13 20:31:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:43,859 INFO L470 AbstractCegarLoop]: Abstraction has 3288 states and 15359 transitions. [2021-10-13 20:31:43,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 15359 transitions. [2021-10-13 20:31:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:43,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:43,873 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:43,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:44,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:44,088 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:44,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1572184091, now seen corresponding path program 17 times [2021-10-13 20:31:44,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:44,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126818421] [2021-10-13 20:31:44,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:31:44,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:44,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:44,091 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:44,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 20:31:44,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:31:44,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:44,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:44,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:45,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:31:45,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:45,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126818421] [2021-10-13 20:31:45,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126818421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:45,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:45,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:31:45,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466473127] [2021-10-13 20:31:45,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:31:45,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:31:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:31:45,898 INFO L87 Difference]: Start difference. First operand 3288 states and 15359 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:31:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:48,394 INFO L93 Difference]: Finished difference Result 6023 states and 25576 transitions. [2021-10-13 20:31:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 20:31:48,394 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:31:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:48,413 INFO L225 Difference]: With dead ends: 6023 [2021-10-13 20:31:48,413 INFO L226 Difference]: Without dead ends: 6016 [2021-10-13 20:31:48,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2374.4ms TimeCoverageRelationStatistics Valid=493, Invalid=1577, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 20:31:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-10-13 20:31:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3474. [2021-10-13 20:31:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 4.633458105384394) internal successors, (16092), 3473 states have internal predecessors, (16092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 16092 transitions. [2021-10-13 20:31:48,559 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 16092 transitions. Word has length 22 [2021-10-13 20:31:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:48,559 INFO L470 AbstractCegarLoop]: Abstraction has 3474 states and 16092 transitions. [2021-10-13 20:31:48,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:31:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 16092 transitions. [2021-10-13 20:31:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:48,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:48,574 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:48,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:48,787 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:48,788 INFO L82 PathProgramCache]: Analyzing trace with hash -788261477, now seen corresponding path program 18 times [2021-10-13 20:31:48,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:48,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17726574] [2021-10-13 20:31:48,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:31:48,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:48,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:48,790 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:48,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 20:31:49,446 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 20:31:49,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:31:49,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:49,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:49,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:50,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:50,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17726574] [2021-10-13 20:31:50,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17726574] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:50,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:50,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:50,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405265140] [2021-10-13 20:31:50,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:50,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:50,673 INFO L87 Difference]: Start difference. First operand 3474 states and 16092 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:31:55,548 INFO L93 Difference]: Finished difference Result 7243 states and 29429 transitions. [2021-10-13 20:31:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-13 20:31:55,548 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:31:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:31:55,571 INFO L225 Difference]: With dead ends: 7243 [2021-10-13 20:31:55,571 INFO L226 Difference]: Without dead ends: 7236 [2021-10-13 20:31:55,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 4516.2ms TimeCoverageRelationStatistics Valid=1054, Invalid=3916, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 20:31:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-10-13 20:31:55,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 3788. [2021-10-13 20:31:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 4.587800369685767) internal successors, (17374), 3787 states have internal predecessors, (17374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:31:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 17374 transitions. [2021-10-13 20:31:55,714 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 17374 transitions. Word has length 22 [2021-10-13 20:31:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:31:55,714 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 17374 transitions. [2021-10-13 20:31:55,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:31:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 17374 transitions. [2021-10-13 20:31:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:31:55,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:31:55,730 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:31:55,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 20:31:55,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:31:55,943 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:31:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:31:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1261932959, now seen corresponding path program 19 times [2021-10-13 20:31:55,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:31:55,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115776329] [2021-10-13 20:31:55,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:31:55,945 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:31:55,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:31:55,947 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:31:55,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 20:31:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:31:56,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:31:56,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:31:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:57,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:31:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:31:57,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:31:57,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115776329] [2021-10-13 20:31:57,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115776329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:31:57,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:31:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:31:57,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125644615] [2021-10-13 20:31:57,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:31:57,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:31:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:31:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:31:57,800 INFO L87 Difference]: Start difference. First operand 3788 states and 17374 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:02,477 INFO L93 Difference]: Finished difference Result 7117 states and 29039 transitions. [2021-10-13 20:32:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 20:32:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:32:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:02,522 INFO L225 Difference]: With dead ends: 7117 [2021-10-13 20:32:02,522 INFO L226 Difference]: Without dead ends: 7096 [2021-10-13 20:32:02,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 4408.9ms TimeCoverageRelationStatistics Valid=971, Invalid=3721, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 20:32:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2021-10-13 20:32:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 3962. [2021-10-13 20:32:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 4.596818985104772) internal successors, (18208), 3961 states have internal predecessors, (18208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 18208 transitions. [2021-10-13 20:32:02,657 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 18208 transitions. Word has length 22 [2021-10-13 20:32:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:02,657 INFO L470 AbstractCegarLoop]: Abstraction has 3962 states and 18208 transitions. [2021-10-13 20:32:02,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 18208 transitions. [2021-10-13 20:32:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:02,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:02,672 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:02,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:02,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:02,887 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:02,889 INFO L82 PathProgramCache]: Analyzing trace with hash 849438523, now seen corresponding path program 20 times [2021-10-13 20:32:02,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:02,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054914717] [2021-10-13 20:32:02,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:32:02,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:02,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:02,891 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:02,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 20:32:03,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:32:03,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:03,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:03,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:04,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:04,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:04,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054914717] [2021-10-13 20:32:04,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054914717] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:04,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:04,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:32:04,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114218576] [2021-10-13 20:32:04,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:32:04,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:32:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:32:04,845 INFO L87 Difference]: Start difference. First operand 3962 states and 18208 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:08,252 INFO L93 Difference]: Finished difference Result 7765 states and 32911 transitions. [2021-10-13 20:32:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:32:08,253 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:32:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:08,281 INFO L225 Difference]: With dead ends: 7765 [2021-10-13 20:32:08,281 INFO L226 Difference]: Without dead ends: 7758 [2021-10-13 20:32:08,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3291.0ms TimeCoverageRelationStatistics Valid=604, Invalid=2048, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 20:32:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2021-10-13 20:32:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 4132. [2021-10-13 20:32:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 4.614137012829823) internal successors, (19061), 4131 states have internal predecessors, (19061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 19061 transitions. [2021-10-13 20:32:08,454 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 19061 transitions. Word has length 22 [2021-10-13 20:32:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:08,455 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 19061 transitions. [2021-10-13 20:32:08,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 19061 transitions. [2021-10-13 20:32:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:08,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:08,466 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:08,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:08,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:08,667 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:08,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1511007045, now seen corresponding path program 21 times [2021-10-13 20:32:08,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:08,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391309464] [2021-10-13 20:32:08,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:32:08,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:08,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:08,670 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:08,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 20:32:09,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:32:09,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:09,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:09,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:09,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:10,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:10,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391309464] [2021-10-13 20:32:10,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391309464] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:10,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:10,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:32:10,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385534732] [2021-10-13 20:32:10,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:32:10,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:32:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:32:10,788 INFO L87 Difference]: Start difference. First operand 4132 states and 19061 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:15,748 INFO L93 Difference]: Finished difference Result 8083 states and 33776 transitions. [2021-10-13 20:32:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 20:32:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:32:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:15,773 INFO L225 Difference]: With dead ends: 8083 [2021-10-13 20:32:15,773 INFO L226 Difference]: Without dead ends: 8076 [2021-10-13 20:32:15,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 4662.7ms TimeCoverageRelationStatistics Valid=875, Invalid=3031, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 20:32:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-10-13 20:32:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 4252. [2021-10-13 20:32:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 4251 states have (on average 4.6438485062338275) internal successors, (19741), 4251 states have internal predecessors, (19741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 19741 transitions. [2021-10-13 20:32:16,062 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 19741 transitions. Word has length 22 [2021-10-13 20:32:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:16,063 INFO L470 AbstractCegarLoop]: Abstraction has 4252 states and 19741 transitions. [2021-10-13 20:32:16,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 19741 transitions. [2021-10-13 20:32:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:16,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:16,080 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:16,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:16,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:16,293 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1428080409, now seen corresponding path program 22 times [2021-10-13 20:32:16,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:16,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873148051] [2021-10-13 20:32:16,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:32:16,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:16,296 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:16,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 20:32:16,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:32:16,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:17,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:17,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:32:18,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:18,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873148051] [2021-10-13 20:32:18,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873148051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:18,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:18,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:32:18,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879890893] [2021-10-13 20:32:18,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:32:18,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:32:18,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:32:18,264 INFO L87 Difference]: Start difference. First operand 4252 states and 19741 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:32:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:20,683 INFO L93 Difference]: Finished difference Result 7638 states and 32711 transitions. [2021-10-13 20:32:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 20:32:20,684 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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 22 [2021-10-13 20:32:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:20,709 INFO L225 Difference]: With dead ends: 7638 [2021-10-13 20:32:20,709 INFO L226 Difference]: Without dead ends: 7624 [2021-10-13 20:32:20,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2363.3ms TimeCoverageRelationStatistics Valid=434, Invalid=1126, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:32:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2021-10-13 20:32:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 4428. [2021-10-13 20:32:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 4.667946690761238) internal successors, (20665), 4427 states have internal predecessors, (20665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 20665 transitions. [2021-10-13 20:32:21,005 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 20665 transitions. Word has length 22 [2021-10-13 20:32:21,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:21,006 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 20665 transitions. [2021-10-13 20:32:21,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:32:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 20665 transitions. [2021-10-13 20:32:21,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:21,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:21,024 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:21,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:21,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:21,225 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:21,226 INFO L82 PathProgramCache]: Analyzing trace with hash -797825523, now seen corresponding path program 23 times [2021-10-13 20:32:21,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:21,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922944643] [2021-10-13 20:32:21,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:32:21,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:21,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:21,229 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:21,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 20:32:22,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:32:22,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:22,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:32:22,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:22,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:23,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:23,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922944643] [2021-10-13 20:32:23,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922944643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:23,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:23,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:32:23,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854618545] [2021-10-13 20:32:23,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:32:23,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:32:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:32:23,701 INFO L87 Difference]: Start difference. First operand 4428 states and 20665 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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) [2021-10-13 20:32:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:28,243 INFO L93 Difference]: Finished difference Result 9816 states and 41759 transitions. [2021-10-13 20:32:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 20:32:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 22 [2021-10-13 20:32:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:28,274 INFO L225 Difference]: With dead ends: 9816 [2021-10-13 20:32:28,275 INFO L226 Difference]: Without dead ends: 9792 [2021-10-13 20:32:28,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 3982.3ms TimeCoverageRelationStatistics Valid=767, Invalid=2655, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 20:32:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2021-10-13 20:32:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 5010. [2021-10-13 20:32:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5009 states have (on average 4.734278299061689) internal successors, (23714), 5009 states have internal predecessors, (23714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 23714 transitions. [2021-10-13 20:32:28,499 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 23714 transitions. Word has length 22 [2021-10-13 20:32:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:28,500 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 23714 transitions. [2021-10-13 20:32:28,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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) [2021-10-13 20:32:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 23714 transitions. [2021-10-13 20:32:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:28,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:28,515 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:28,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:28,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:28,716 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:28,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1907582131, now seen corresponding path program 24 times [2021-10-13 20:32:28,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:28,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913397480] [2021-10-13 20:32:28,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:32:28,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:28,720 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:28,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 20:32:29,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:32:29,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:29,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:29,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:30,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:31,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:31,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913397480] [2021-10-13 20:32:31,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913397480] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:31,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:31,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:32:31,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464088689] [2021-10-13 20:32:31,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:32:31,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:32:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:32:31,052 INFO L87 Difference]: Start difference. First operand 5010 states and 23714 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:35,418 INFO L93 Difference]: Finished difference Result 10342 states and 44708 transitions. [2021-10-13 20:32:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 20:32:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:32:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:35,455 INFO L225 Difference]: With dead ends: 10342 [2021-10-13 20:32:35,455 INFO L226 Difference]: Without dead ends: 10328 [2021-10-13 20:32:35,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 4188.7ms TimeCoverageRelationStatistics Valid=767, Invalid=2425, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 20:32:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10328 states. [2021-10-13 20:32:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10328 to 5390. [2021-10-13 20:32:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 4.801818519205789) internal successors, (25877), 5389 states have internal predecessors, (25877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 25877 transitions. [2021-10-13 20:32:35,707 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 25877 transitions. Word has length 22 [2021-10-13 20:32:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:35,707 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 25877 transitions. [2021-10-13 20:32:35,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 25877 transitions. [2021-10-13 20:32:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:35,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:35,723 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:35,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:35,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:35,924 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:35,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2007910331, now seen corresponding path program 25 times [2021-10-13 20:32:35,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:35,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511731064] [2021-10-13 20:32:35,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:32:35,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:35,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:35,928 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:35,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 20:32:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:36,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:36,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:37,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:32:37,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:37,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511731064] [2021-10-13 20:32:37,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511731064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:37,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:37,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:32:37,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048342904] [2021-10-13 20:32:38,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:32:38,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:38,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:32:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:32:38,002 INFO L87 Difference]: Start difference. First operand 5390 states and 25877 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:32:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:41,290 INFO L93 Difference]: Finished difference Result 9188 states and 40007 transitions. [2021-10-13 20:32:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 20:32:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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 22 [2021-10-13 20:32:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:41,323 INFO L225 Difference]: With dead ends: 9188 [2021-10-13 20:32:41,323 INFO L226 Difference]: Without dead ends: 9174 [2021-10-13 20:32:41,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 3170.5ms TimeCoverageRelationStatistics Valid=570, Invalid=1686, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 20:32:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9174 states. [2021-10-13 20:32:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9174 to 5618. [2021-10-13 20:32:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5617 states have (on average 4.821434929677764) internal successors, (27082), 5617 states have internal predecessors, (27082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 27082 transitions. [2021-10-13 20:32:41,596 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 27082 transitions. Word has length 22 [2021-10-13 20:32:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:41,597 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 27082 transitions. [2021-10-13 20:32:41,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:32:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 27082 transitions. [2021-10-13 20:32:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:41,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:41,611 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:41,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:41,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:41,812 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1504681535, now seen corresponding path program 26 times [2021-10-13 20:32:41,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:41,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94942131] [2021-10-13 20:32:41,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:32:41,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:41,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:41,816 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:41,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 20:32:42,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:32:42,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:42,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:32:42,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:43,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:44,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:44,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94942131] [2021-10-13 20:32:44,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94942131] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:44,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:44,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:32:44,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642847501] [2021-10-13 20:32:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:32:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:32:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:32:44,167 INFO L87 Difference]: Start difference. First operand 5618 states and 27082 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:32:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:46,019 INFO L93 Difference]: Finished difference Result 7433 states and 34318 transitions. [2021-10-13 20:32:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 20:32:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:32:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:46,048 INFO L225 Difference]: With dead ends: 7433 [2021-10-13 20:32:46,048 INFO L226 Difference]: Without dead ends: 7400 [2021-10-13 20:32:46,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1708.4ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 20:32:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2021-10-13 20:32:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 6120. [2021-10-13 20:32:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6120 states, 6119 states have (on average 4.807484883150842) internal successors, (29417), 6119 states have internal predecessors, (29417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6120 states to 6120 states and 29417 transitions. [2021-10-13 20:32:46,272 INFO L78 Accepts]: Start accepts. Automaton has 6120 states and 29417 transitions. Word has length 22 [2021-10-13 20:32:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:46,273 INFO L470 AbstractCegarLoop]: Abstraction has 6120 states and 29417 transitions. [2021-10-13 20:32:46,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:32:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6120 states and 29417 transitions. [2021-10-13 20:32:46,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:46,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:46,289 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:46,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-13 20:32:46,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:46,505 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1338971195, now seen corresponding path program 27 times [2021-10-13 20:32:46,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:46,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606665726] [2021-10-13 20:32:46,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:32:46,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:46,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:46,509 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:46,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 20:32:47,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:32:47,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:47,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:47,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:48,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:48,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606665726] [2021-10-13 20:32:48,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606665726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:48,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:48,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:32:48,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981388683] [2021-10-13 20:32:48,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:32:48,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:32:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:32:48,678 INFO L87 Difference]: Start difference. First operand 6120 states and 29417 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:53,038 INFO L93 Difference]: Finished difference Result 9293 states and 40753 transitions. [2021-10-13 20:32:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 20:32:53,039 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:32:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:53,069 INFO L225 Difference]: With dead ends: 9293 [2021-10-13 20:32:53,069 INFO L226 Difference]: Without dead ends: 9286 [2021-10-13 20:32:53,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 4084.5ms TimeCoverageRelationStatistics Valid=727, Invalid=2465, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 20:32:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9286 states. [2021-10-13 20:32:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9286 to 6314. [2021-10-13 20:32:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6314 states, 6313 states have (on average 4.811024869317282) internal successors, (30372), 6313 states have internal predecessors, (30372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:32:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6314 states to 6314 states and 30372 transitions. [2021-10-13 20:32:53,294 INFO L78 Accepts]: Start accepts. Automaton has 6314 states and 30372 transitions. Word has length 22 [2021-10-13 20:32:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:53,294 INFO L470 AbstractCegarLoop]: Abstraction has 6314 states and 30372 transitions. [2021-10-13 20:32:53,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:32:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6314 states and 30372 transitions. [2021-10-13 20:32:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:32:53,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:53,311 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:32:53,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:53,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:53,522 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:32:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:53,523 INFO L82 PathProgramCache]: Analyzing trace with hash 627628643, now seen corresponding path program 28 times [2021-10-13 20:32:53,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:53,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548894582] [2021-10-13 20:32:53,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:32:53,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:53,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:53,526 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:53,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 20:32:54,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:32:54,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:32:54,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:32:54,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:54,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:55,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:55,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548894582] [2021-10-13 20:32:55,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548894582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:55,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:55,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:32:55,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508088471] [2021-10-13 20:32:55,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:32:55,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:32:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:32:55,874 INFO L87 Difference]: Start difference. First operand 6314 states and 30372 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:00,915 INFO L93 Difference]: Finished difference Result 9949 states and 44258 transitions. [2021-10-13 20:33:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 20:33:00,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:00,952 INFO L225 Difference]: With dead ends: 9949 [2021-10-13 20:33:00,952 INFO L226 Difference]: Without dead ends: 9942 [2021-10-13 20:33:00,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 4645.4ms TimeCoverageRelationStatistics Valid=741, Invalid=2451, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 20:33:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9942 states. [2021-10-13 20:33:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9942 to 6420. [2021-10-13 20:33:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6420 states, 6419 states have (on average 4.820065430752454) internal successors, (30940), 6419 states have internal predecessors, (30940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 30940 transitions. [2021-10-13 20:33:01,238 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 30940 transitions. Word has length 22 [2021-10-13 20:33:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:01,238 INFO L470 AbstractCegarLoop]: Abstraction has 6420 states and 30940 transitions. [2021-10-13 20:33:01,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 30940 transitions. [2021-10-13 20:33:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:01,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:01,260 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:01,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:01,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:01,461 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1528753753, now seen corresponding path program 29 times [2021-10-13 20:33:01,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:01,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666627500] [2021-10-13 20:33:01,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:33:01,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:01,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:01,465 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:01,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 20:33:02,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:33:02,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:02,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:33:02,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:02,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:03,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:03,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666627500] [2021-10-13 20:33:03,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666627500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:03,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:03,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 20:33:03,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174792571] [2021-10-13 20:33:03,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:33:03,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:33:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:33:03,460 INFO L87 Difference]: Start difference. First operand 6420 states and 30940 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:33:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:05,958 INFO L93 Difference]: Finished difference Result 9394 states and 41538 transitions. [2021-10-13 20:33:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:33:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:33:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:05,992 INFO L225 Difference]: With dead ends: 9394 [2021-10-13 20:33:05,992 INFO L226 Difference]: Without dead ends: 9334 [2021-10-13 20:33:05,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2196.2ms TimeCoverageRelationStatistics Valid=541, Invalid=1811, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 20:33:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2021-10-13 20:33:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 6828. [2021-10-13 20:33:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 6827 states have (on average 4.805917679800791) internal successors, (32810), 6827 states have internal predecessors, (32810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:06,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 32810 transitions. [2021-10-13 20:33:06,241 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 32810 transitions. Word has length 22 [2021-10-13 20:33:06,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:06,241 INFO L470 AbstractCegarLoop]: Abstraction has 6828 states and 32810 transitions. [2021-10-13 20:33:06,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:33:06,241 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 32810 transitions. [2021-10-13 20:33:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:06,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:06,262 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:06,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:06,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:06,463 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:06,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:06,464 INFO L82 PathProgramCache]: Analyzing trace with hash -272472439, now seen corresponding path program 30 times [2021-10-13 20:33:06,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:06,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444435581] [2021-10-13 20:33:06,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:33:06,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:06,467 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:06,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 20:33:07,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:33:07,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:07,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:07,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:07,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:08,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:08,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444435581] [2021-10-13 20:33:08,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444435581] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:08,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:08,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:33:08,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036827097] [2021-10-13 20:33:08,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:33:08,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:08,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:33:08,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:33:08,744 INFO L87 Difference]: Start difference. First operand 6828 states and 32810 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:13,313 INFO L93 Difference]: Finished difference Result 10325 states and 46411 transitions. [2021-10-13 20:33:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 20:33:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:13,373 INFO L225 Difference]: With dead ends: 10325 [2021-10-13 20:33:13,373 INFO L226 Difference]: Without dead ends: 10318 [2021-10-13 20:33:13,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 4295.8ms TimeCoverageRelationStatistics Valid=812, Invalid=2728, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 20:33:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2021-10-13 20:33:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 7034. [2021-10-13 20:33:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 4.812313379781032) internal successors, (33845), 7033 states have internal predecessors, (33845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 33845 transitions. [2021-10-13 20:33:13,770 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 33845 transitions. Word has length 22 [2021-10-13 20:33:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:13,771 INFO L470 AbstractCegarLoop]: Abstraction has 7034 states and 33845 transitions. [2021-10-13 20:33:13,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 33845 transitions. [2021-10-13 20:33:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:13,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:13,796 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:13,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:14,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:14,010 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:14,011 INFO L82 PathProgramCache]: Analyzing trace with hash 718956289, now seen corresponding path program 31 times [2021-10-13 20:33:14,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:14,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738764814] [2021-10-13 20:33:14,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:33:14,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:14,014 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:14,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 20:33:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:15,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:15,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:15,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:16,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:16,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738764814] [2021-10-13 20:33:16,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738764814] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:16,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:16,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:33:16,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148501256] [2021-10-13 20:33:16,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:33:16,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:33:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:33:16,380 INFO L87 Difference]: Start difference. First operand 7034 states and 33845 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:20,480 INFO L93 Difference]: Finished difference Result 10822 states and 48349 transitions. [2021-10-13 20:33:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 20:33:20,480 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:20,520 INFO L225 Difference]: With dead ends: 10822 [2021-10-13 20:33:20,520 INFO L226 Difference]: Without dead ends: 10808 [2021-10-13 20:33:20,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 3853.8ms TimeCoverageRelationStatistics Valid=728, Invalid=2242, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 20:33:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10808 states. [2021-10-13 20:33:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10808 to 7126. [2021-10-13 20:33:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 4.825964912280702) internal successors, (34385), 7125 states have internal predecessors, (34385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 34385 transitions. [2021-10-13 20:33:20,871 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 34385 transitions. Word has length 22 [2021-10-13 20:33:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:20,872 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 34385 transitions. [2021-10-13 20:33:20,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 34385 transitions. [2021-10-13 20:33:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:20,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:20,895 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:20,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:21,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:21,109 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1317197265, now seen corresponding path program 32 times [2021-10-13 20:33:21,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:21,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927797591] [2021-10-13 20:33:21,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:33:21,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:21,113 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:21,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 20:33:22,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:33:22,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:22,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:22,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:22,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:23,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:23,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927797591] [2021-10-13 20:33:23,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927797591] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:23,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:23,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:33:23,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686740273] [2021-10-13 20:33:23,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:33:23,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:33:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:33:23,567 INFO L87 Difference]: Start difference. First operand 7126 states and 34385 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:27,667 INFO L93 Difference]: Finished difference Result 11181 states and 50282 transitions. [2021-10-13 20:33:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:33:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:27,710 INFO L225 Difference]: With dead ends: 11181 [2021-10-13 20:33:27,710 INFO L226 Difference]: Without dead ends: 11174 [2021-10-13 20:33:27,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 3778.1ms TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 20:33:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2021-10-13 20:33:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 7280. [2021-10-13 20:33:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7280 states, 7279 states have (on average 4.8326693227091635) internal successors, (35177), 7279 states have internal predecessors, (35177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 35177 transitions. [2021-10-13 20:33:28,072 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 35177 transitions. Word has length 22 [2021-10-13 20:33:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:28,072 INFO L470 AbstractCegarLoop]: Abstraction has 7280 states and 35177 transitions. [2021-10-13 20:33:28,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 35177 transitions. [2021-10-13 20:33:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:28,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:28,093 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:28,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:28,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:28,294 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:28,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:28,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1398131311, now seen corresponding path program 33 times [2021-10-13 20:33:28,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:28,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606905842] [2021-10-13 20:33:28,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:33:28,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:28,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:28,298 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:28,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 20:33:29,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:33:29,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:29,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:29,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:29,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:30,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:30,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606905842] [2021-10-13 20:33:30,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606905842] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:30,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:30,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:33:30,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851267224] [2021-10-13 20:33:30,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:33:30,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:33:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:33:30,974 INFO L87 Difference]: Start difference. First operand 7280 states and 35177 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:35,434 INFO L93 Difference]: Finished difference Result 10866 states and 48516 transitions. [2021-10-13 20:33:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 20:33:35,435 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:35,474 INFO L225 Difference]: With dead ends: 10866 [2021-10-13 20:33:35,474 INFO L226 Difference]: Without dead ends: 10814 [2021-10-13 20:33:35,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 4052.3ms TimeCoverageRelationStatistics Valid=604, Invalid=2152, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 20:33:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10814 states. [2021-10-13 20:33:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10814 to 7658. [2021-10-13 20:33:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7658 states, 7657 states have (on average 4.828784119106699) internal successors, (36974), 7657 states have internal predecessors, (36974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 36974 transitions. [2021-10-13 20:33:35,928 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 36974 transitions. Word has length 22 [2021-10-13 20:33:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:35,928 INFO L470 AbstractCegarLoop]: Abstraction has 7658 states and 36974 transitions. [2021-10-13 20:33:35,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 36974 transitions. [2021-10-13 20:33:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:35,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:35,951 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:35,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:36,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:36,164 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash 946061385, now seen corresponding path program 34 times [2021-10-13 20:33:36,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:36,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040773592] [2021-10-13 20:33:36,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:33:36,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:36,168 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:36,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 20:33:37,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:33:37,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:37,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:37,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:37,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:38,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:38,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040773592] [2021-10-13 20:33:38,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040773592] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:38,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:38,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:33:38,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805468583] [2021-10-13 20:33:38,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:33:38,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:33:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:33:38,575 INFO L87 Difference]: Start difference. First operand 7658 states and 36974 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:42,296 INFO L93 Difference]: Finished difference Result 11529 states and 52145 transitions. [2021-10-13 20:33:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:33:42,297 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:42,340 INFO L225 Difference]: With dead ends: 11529 [2021-10-13 20:33:42,341 INFO L226 Difference]: Without dead ends: 11522 [2021-10-13 20:33:42,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 3403.8ms TimeCoverageRelationStatistics Valid=600, Invalid=1850, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 20:33:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11522 states. [2021-10-13 20:33:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11522 to 7742. [2021-10-13 20:33:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7742 states, 7741 states have (on average 4.834775868750808) internal successors, (37426), 7741 states have internal predecessors, (37426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7742 states to 7742 states and 37426 transitions. [2021-10-13 20:33:42,706 INFO L78 Accepts]: Start accepts. Automaton has 7742 states and 37426 transitions. Word has length 22 [2021-10-13 20:33:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:42,706 INFO L470 AbstractCegarLoop]: Abstraction has 7742 states and 37426 transitions. [2021-10-13 20:33:42,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7742 states and 37426 transitions. [2021-10-13 20:33:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:42,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:42,729 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:42,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:42,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:42,930 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:42,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1937490113, now seen corresponding path program 35 times [2021-10-13 20:33:42,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:42,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538292998] [2021-10-13 20:33:42,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:33:42,933 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:42,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:42,934 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:42,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 20:33:44,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:33:44,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:44,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:33:44,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:44,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:45,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:45,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538292998] [2021-10-13 20:33:45,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538292998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:45,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:45,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 20:33:45,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623654325] [2021-10-13 20:33:45,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:33:45,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:33:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:33:45,389 INFO L87 Difference]: Start difference. First operand 7742 states and 37426 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:33:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:50,001 INFO L93 Difference]: Finished difference Result 12704 states and 56140 transitions. [2021-10-13 20:33:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 20:33:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:33:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:50,050 INFO L225 Difference]: With dead ends: 12704 [2021-10-13 20:33:50,050 INFO L226 Difference]: Without dead ends: 12690 [2021-10-13 20:33:50,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 4019.2ms TimeCoverageRelationStatistics Valid=718, Invalid=2362, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 20:33:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12690 states. [2021-10-13 20:33:50,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12690 to 7998. [2021-10-13 20:33:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7998 states, 7997 states have (on average 4.843066149806178) internal successors, (38730), 7997 states have internal predecessors, (38730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 38730 transitions. [2021-10-13 20:33:50,374 INFO L78 Accepts]: Start accepts. Automaton has 7998 states and 38730 transitions. Word has length 22 [2021-10-13 20:33:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:50,374 INFO L470 AbstractCegarLoop]: Abstraction has 7998 states and 38730 transitions. [2021-10-13 20:33:50,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:33:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7998 states and 38730 transitions. [2021-10-13 20:33:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:50,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:50,395 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:50,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-13 20:33:50,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:50,596 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:50,597 INFO L82 PathProgramCache]: Analyzing trace with hash 678399207, now seen corresponding path program 36 times [2021-10-13 20:33:50,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:50,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684893158] [2021-10-13 20:33:50,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:33:50,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:50,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:50,600 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) [2021-10-13 20:33:50,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 20:33:51,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 20:33:51,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:51,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:52,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:53,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:53,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684893158] [2021-10-13 20:33:53,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684893158] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:53,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:53,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:33:53,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253207184] [2021-10-13 20:33:53,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:33:53,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:33:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:33:53,324 INFO L87 Difference]: Start difference. First operand 7998 states and 38730 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:56,984 INFO L93 Difference]: Finished difference Result 11287 states and 51078 transitions. [2021-10-13 20:33:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 20:33:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:33:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:57,025 INFO L225 Difference]: With dead ends: 11287 [2021-10-13 20:33:57,025 INFO L226 Difference]: Without dead ends: 11280 [2021-10-13 20:33:57,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 3416.6ms TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:33:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11280 states. [2021-10-13 20:33:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11280 to 8140. [2021-10-13 20:33:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 8139 states have (on average 4.850964491952328) internal successors, (39482), 8139 states have internal predecessors, (39482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:33:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 39482 transitions. [2021-10-13 20:33:57,305 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 39482 transitions. Word has length 22 [2021-10-13 20:33:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:57,305 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 39482 transitions. [2021-10-13 20:33:57,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:33:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 39482 transitions. [2021-10-13 20:33:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:33:57,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:57,330 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:33:57,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:57,530 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 [2021-10-13 20:33:57,531 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:33:57,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash -259053657, now seen corresponding path program 37 times [2021-10-13 20:33:57,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:57,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093469980] [2021-10-13 20:33:57,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:33:57,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:57,534 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) [2021-10-13 20:33:57,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 20:33:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:58,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:33:58,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:59,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:00,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:00,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093469980] [2021-10-13 20:34:00,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093469980] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:00,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:00,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:34:00,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296116031] [2021-10-13 20:34:00,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:34:00,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:34:00,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:34:00,130 INFO L87 Difference]: Start difference. First operand 8140 states and 39482 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:34:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:05,457 INFO L93 Difference]: Finished difference Result 12288 states and 55204 transitions. [2021-10-13 20:34:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 20:34:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:34:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:05,501 INFO L225 Difference]: With dead ends: 12288 [2021-10-13 20:34:05,501 INFO L226 Difference]: Without dead ends: 12274 [2021-10-13 20:34:05,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 5010.6ms TimeCoverageRelationStatistics Valid=796, Invalid=2626, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 20:34:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12274 states. [2021-10-13 20:34:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12274 to 8222. [2021-10-13 20:34:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8222 states, 8221 states have (on average 4.861574017759397) internal successors, (39967), 8221 states have internal predecessors, (39967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8222 states to 8222 states and 39967 transitions. [2021-10-13 20:34:05,830 INFO L78 Accepts]: Start accepts. Automaton has 8222 states and 39967 transitions. Word has length 22 [2021-10-13 20:34:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:05,830 INFO L470 AbstractCegarLoop]: Abstraction has 8222 states and 39967 transitions. [2021-10-13 20:34:05,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:34:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8222 states and 39967 transitions. [2021-10-13 20:34:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:05,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:05,853 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:05,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:06,054 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 [2021-10-13 20:34:06,054 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:06,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1064432909, now seen corresponding path program 38 times [2021-10-13 20:34:06,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:06,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386336923] [2021-10-13 20:34:06,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:34:06,056 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:06,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:06,058 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) [2021-10-13 20:34:06,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-13 20:34:07,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:34:07,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:07,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:34:07,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:07,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:34:08,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:08,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386336923] [2021-10-13 20:34:08,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386336923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:08,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:08,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-10-13 20:34:08,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423862737] [2021-10-13 20:34:08,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:34:08,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:34:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:34:08,574 INFO L87 Difference]: Start difference. First operand 8222 states and 39967 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-13 20:34:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:09,878 INFO L93 Difference]: Finished difference Result 11053 states and 51108 transitions. [2021-10-13 20:34:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 20:34:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 22 [2021-10-13 20:34:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:09,920 INFO L225 Difference]: With dead ends: 11053 [2021-10-13 20:34:09,920 INFO L226 Difference]: Without dead ends: 11046 [2021-10-13 20:34:09,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1227.7ms TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2021-10-13 20:34:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2021-10-13 20:34:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 8376. [2021-10-13 20:34:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8376 states, 8375 states have (on average 4.855283582089553) internal successors, (40663), 8375 states have internal predecessors, (40663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 40663 transitions. [2021-10-13 20:34:10,192 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 40663 transitions. Word has length 22 [2021-10-13 20:34:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:10,193 INFO L470 AbstractCegarLoop]: Abstraction has 8376 states and 40663 transitions. [2021-10-13 20:34:10,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-13 20:34:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 40663 transitions. [2021-10-13 20:34:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:10,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:10,214 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:10,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:10,415 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 [2021-10-13 20:34:10,415 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:10,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1616967653, now seen corresponding path program 39 times [2021-10-13 20:34:10,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:10,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56441412] [2021-10-13 20:34:10,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:34:10,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:10,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:10,419 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) [2021-10-13 20:34:10,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 20:34:11,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:34:11,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:11,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:34:11,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:12,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:34:13,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:13,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56441412] [2021-10-13 20:34:13,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56441412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:13,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:13,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:34:13,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945628548] [2021-10-13 20:34:13,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:34:13,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:34:13,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:34:13,100 INFO L87 Difference]: Start difference. First operand 8376 states and 40663 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:34:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:15,905 INFO L93 Difference]: Finished difference Result 12244 states and 55614 transitions. [2021-10-13 20:34:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:34:15,906 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:34:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:16,053 INFO L225 Difference]: With dead ends: 12244 [2021-10-13 20:34:16,053 INFO L226 Difference]: Without dead ends: 12230 [2021-10-13 20:34:16,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2529.9ms TimeCoverageRelationStatistics Valid=502, Invalid=1390, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 20:34:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2021-10-13 20:34:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 8610. [2021-10-13 20:34:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8610 states, 8609 states have (on average 4.854106167963759) internal successors, (41789), 8609 states have internal predecessors, (41789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8610 states to 8610 states and 41789 transitions. [2021-10-13 20:34:16,331 INFO L78 Accepts]: Start accepts. Automaton has 8610 states and 41789 transitions. Word has length 22 [2021-10-13 20:34:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:16,331 INFO L470 AbstractCegarLoop]: Abstraction has 8610 states and 41789 transitions. [2021-10-13 20:34:16,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:34:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 8610 states and 41789 transitions. [2021-10-13 20:34:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:16,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:16,354 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:16,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:16,555 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 [2021-10-13 20:34:16,555 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash -78278169, now seen corresponding path program 40 times [2021-10-13 20:34:16,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:16,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277538530] [2021-10-13 20:34:16,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:34:16,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:16,560 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) [2021-10-13 20:34:16,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-13 20:34:17,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:34:17,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:17,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:34:17,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:18,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:34:19,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:19,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277538530] [2021-10-13 20:34:19,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277538530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:19,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:19,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:34:19,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965692439] [2021-10-13 20:34:19,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:34:19,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:34:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:34:19,005 INFO L87 Difference]: Start difference. First operand 8610 states and 41789 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:34:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:21,562 INFO L93 Difference]: Finished difference Result 12246 states and 55556 transitions. [2021-10-13 20:34:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 20:34:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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 22 [2021-10-13 20:34:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:21,607 INFO L225 Difference]: With dead ends: 12246 [2021-10-13 20:34:21,607 INFO L226 Difference]: Without dead ends: 12232 [2021-10-13 20:34:21,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2350.2ms TimeCoverageRelationStatistics Valid=500, Invalid=1306, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:34:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2021-10-13 20:34:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 8804. [2021-10-13 20:34:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8804 states, 8803 states have (on average 4.856298988981029) internal successors, (42750), 8803 states have internal predecessors, (42750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 42750 transitions. [2021-10-13 20:34:21,996 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 42750 transitions. Word has length 22 [2021-10-13 20:34:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:21,996 INFO L470 AbstractCegarLoop]: Abstraction has 8804 states and 42750 transitions. [2021-10-13 20:34:21,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:34:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 42750 transitions. [2021-10-13 20:34:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:22,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:22,019 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:22,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:22,219 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 [2021-10-13 20:34:22,220 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:22,221 INFO L82 PathProgramCache]: Analyzing trace with hash 189252487, now seen corresponding path program 41 times [2021-10-13 20:34:22,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:22,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325771373] [2021-10-13 20:34:22,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:34:22,223 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:22,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:22,224 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) [2021-10-13 20:34:22,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-13 20:34:23,661 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:34:23,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:23,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:34:23,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:24,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:24,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:24,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325771373] [2021-10-13 20:34:24,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325771373] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:24,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:24,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 20:34:24,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979691991] [2021-10-13 20:34:24,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:34:24,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:24,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:34:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:34:24,882 INFO L87 Difference]: Start difference. First operand 8804 states and 42750 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:34:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:28,714 INFO L93 Difference]: Finished difference Result 12581 states and 56661 transitions. [2021-10-13 20:34:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 20:34:28,715 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:34:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:28,864 INFO L225 Difference]: With dead ends: 12581 [2021-10-13 20:34:28,864 INFO L226 Difference]: Without dead ends: 12574 [2021-10-13 20:34:28,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 3575.0ms TimeCoverageRelationStatistics Valid=630, Invalid=2232, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:34:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2021-10-13 20:34:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 8990. [2021-10-13 20:34:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8990 states, 8989 states have (on average 4.866392257203248) internal successors, (43744), 8989 states have internal predecessors, (43744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 43744 transitions. [2021-10-13 20:34:29,158 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 43744 transitions. Word has length 22 [2021-10-13 20:34:29,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:29,158 INFO L470 AbstractCegarLoop]: Abstraction has 8990 states and 43744 transitions. [2021-10-13 20:34:29,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:34:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 43744 transitions. [2021-10-13 20:34:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:29,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:29,181 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:29,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-13 20:34:29,382 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 [2021-10-13 20:34:29,382 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1016007463, now seen corresponding path program 42 times [2021-10-13 20:34:29,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:29,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206973748] [2021-10-13 20:34:29,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:34:29,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:29,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:29,387 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) [2021-10-13 20:34:29,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 20:34:30,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 20:34:30,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:30,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:34:30,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:31,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:32,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:32,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206973748] [2021-10-13 20:34:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206973748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:32,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:32,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:34:32,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938281227] [2021-10-13 20:34:32,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:34:32,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:34:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:34:32,273 INFO L87 Difference]: Start difference. First operand 8990 states and 43744 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:34:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:36,847 INFO L93 Difference]: Finished difference Result 12652 states and 57272 transitions. [2021-10-13 20:34:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:34:36,848 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:34:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:36,900 INFO L225 Difference]: With dead ends: 12652 [2021-10-13 20:34:36,900 INFO L226 Difference]: Without dead ends: 12645 [2021-10-13 20:34:36,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 4226.3ms TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 20:34:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12645 states. [2021-10-13 20:34:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12645 to 9124. [2021-10-13 20:34:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9124 states, 9123 states have (on average 4.877452592349008) internal successors, (44497), 9123 states have internal predecessors, (44497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9124 states to 9124 states and 44497 transitions. [2021-10-13 20:34:37,218 INFO L78 Accepts]: Start accepts. Automaton has 9124 states and 44497 transitions. Word has length 22 [2021-10-13 20:34:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:37,219 INFO L470 AbstractCegarLoop]: Abstraction has 9124 states and 44497 transitions. [2021-10-13 20:34:37,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:34:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9124 states and 44497 transitions. [2021-10-13 20:34:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:37,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:37,242 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:37,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:37,450 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 [2021-10-13 20:34:37,451 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:37,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:37,451 INFO L82 PathProgramCache]: Analyzing trace with hash 786000381, now seen corresponding path program 43 times [2021-10-13 20:34:37,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:37,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694142900] [2021-10-13 20:34:37,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:34:37,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:37,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:37,454 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) [2021-10-13 20:34:37,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-13 20:34:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:38,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:34:38,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:39,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:40,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:40,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694142900] [2021-10-13 20:34:40,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694142900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:40,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:40,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:34:40,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407416796] [2021-10-13 20:34:40,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:34:40,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:34:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:34:40,108 INFO L87 Difference]: Start difference. First operand 9124 states and 44497 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:34:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:43,328 INFO L93 Difference]: Finished difference Result 12839 states and 59099 transitions. [2021-10-13 20:34:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 20:34:43,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:34:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:43,385 INFO L225 Difference]: With dead ends: 12839 [2021-10-13 20:34:43,385 INFO L226 Difference]: Without dead ends: 12832 [2021-10-13 20:34:43,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2809.7ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 20:34:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12832 states. [2021-10-13 20:34:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12832 to 9250. [2021-10-13 20:34:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9250 states, 9249 states have (on average 4.881933181965618) internal successors, (45153), 9249 states have internal predecessors, (45153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9250 states to 9250 states and 45153 transitions. [2021-10-13 20:34:43,727 INFO L78 Accepts]: Start accepts. Automaton has 9250 states and 45153 transitions. Word has length 22 [2021-10-13 20:34:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:43,728 INFO L470 AbstractCegarLoop]: Abstraction has 9250 states and 45153 transitions. [2021-10-13 20:34:43,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:34:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 9250 states and 45153 transitions. [2021-10-13 20:34:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:43,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:43,754 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:43,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:43,955 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 [2021-10-13 20:34:43,955 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:43,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1777429109, now seen corresponding path program 44 times [2021-10-13 20:34:43,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:43,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890997790] [2021-10-13 20:34:43,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:34:43,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:43,958 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) [2021-10-13 20:34:43,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 20:34:45,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:34:45,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:45,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:34:45,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:45,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:46,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:46,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890997790] [2021-10-13 20:34:46,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890997790] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:46,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:46,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:34:46,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036914036] [2021-10-13 20:34:46,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:34:46,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:34:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:34:46,894 INFO L87 Difference]: Start difference. First operand 9250 states and 45153 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:34:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:53,024 INFO L93 Difference]: Finished difference Result 14311 states and 65288 transitions. [2021-10-13 20:34:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 20:34:53,024 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:34:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:53,083 INFO L225 Difference]: With dead ends: 14311 [2021-10-13 20:34:53,083 INFO L226 Difference]: Without dead ends: 14304 [2021-10-13 20:34:53,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 5237.4ms TimeCoverageRelationStatistics Valid=828, Invalid=3332, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 20:34:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14304 states. [2021-10-13 20:34:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14304 to 9610. [2021-10-13 20:34:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9609 states have (on average 4.901446560516183) internal successors, (47098), 9609 states have internal predecessors, (47098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:34:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 47098 transitions. [2021-10-13 20:34:53,439 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 47098 transitions. Word has length 22 [2021-10-13 20:34:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:53,439 INFO L470 AbstractCegarLoop]: Abstraction has 9610 states and 47098 transitions. [2021-10-13 20:34:53,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:34:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 47098 transitions. [2021-10-13 20:34:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:34:53,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:53,464 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:53,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:53,664 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 [2021-10-13 20:34:53,665 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:34:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1170444981, now seen corresponding path program 45 times [2021-10-13 20:34:53,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:53,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894672451] [2021-10-13 20:34:53,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:34:53,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:53,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:53,669 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) [2021-10-13 20:34:53,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-13 20:34:55,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:34:55,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:55,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:34:55,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:55,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:56,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:56,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894672451] [2021-10-13 20:34:56,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894672451] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:56,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:56,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:34:56,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411049815] [2021-10-13 20:34:56,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:34:56,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:34:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:34:56,687 INFO L87 Difference]: Start difference. First operand 9610 states and 47098 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:01,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:01,866 INFO L93 Difference]: Finished difference Result 13479 states and 61711 transitions. [2021-10-13 20:35:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 20:35:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:35:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:01,921 INFO L225 Difference]: With dead ends: 13479 [2021-10-13 20:35:01,921 INFO L226 Difference]: Without dead ends: 13472 [2021-10-13 20:35:01,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 4698.4ms TimeCoverageRelationStatistics Valid=760, Invalid=2432, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 20:35:01,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13472 states. [2021-10-13 20:35:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13472 to 9774. [2021-10-13 20:35:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9774 states, 9773 states have (on average 4.912514069374808) internal successors, (48010), 9773 states have internal predecessors, (48010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 48010 transitions. [2021-10-13 20:35:02,429 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 48010 transitions. Word has length 22 [2021-10-13 20:35:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:02,429 INFO L470 AbstractCegarLoop]: Abstraction has 9774 states and 48010 transitions. [2021-10-13 20:35:02,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 48010 transitions. [2021-10-13 20:35:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:02,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:02,455 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:02,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:02,656 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 [2021-10-13 20:35:02,656 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:02,658 INFO L82 PathProgramCache]: Analyzing trace with hash -419114661, now seen corresponding path program 46 times [2021-10-13 20:35:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:02,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526333115] [2021-10-13 20:35:02,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:35:02,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:02,660 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) [2021-10-13 20:35:02,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 20:35:04,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:35:04,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:04,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:35:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:04,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:05,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:05,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526333115] [2021-10-13 20:35:05,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526333115] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:05,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:05,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:35:05,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14967027] [2021-10-13 20:35:05,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:35:05,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:35:05,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:35:05,595 INFO L87 Difference]: Start difference. First operand 9774 states and 48010 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:11,111 INFO L93 Difference]: Finished difference Result 14226 states and 65012 transitions. [2021-10-13 20:35:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 20:35:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:35:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:11,190 INFO L225 Difference]: With dead ends: 14226 [2021-10-13 20:35:11,191 INFO L226 Difference]: Without dead ends: 14212 [2021-10-13 20:35:11,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 4975.4ms TimeCoverageRelationStatistics Valid=835, Invalid=2587, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 20:35:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14212 states. [2021-10-13 20:35:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14212 to 9872. [2021-10-13 20:35:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9872 states, 9871 states have (on average 4.922601560125621) internal successors, (48591), 9871 states have internal predecessors, (48591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9872 states to 9872 states and 48591 transitions. [2021-10-13 20:35:11,592 INFO L78 Accepts]: Start accepts. Automaton has 9872 states and 48591 transitions. Word has length 22 [2021-10-13 20:35:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:11,593 INFO L470 AbstractCegarLoop]: Abstraction has 9872 states and 48591 transitions. [2021-10-13 20:35:11,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 9872 states and 48591 transitions. [2021-10-13 20:35:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:11,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:11,619 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:11,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:11,820 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 [2021-10-13 20:35:11,820 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:11,821 INFO L82 PathProgramCache]: Analyzing trace with hash 184275789, now seen corresponding path program 47 times [2021-10-13 20:35:11,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:11,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101358898] [2021-10-13 20:35:11,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:35:11,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:11,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:11,824 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) [2021-10-13 20:35:11,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-13 20:35:13,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:35:13,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:13,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:35:13,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:13,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:14,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:14,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101358898] [2021-10-13 20:35:14,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101358898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:14,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:14,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 20:35:14,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590798851] [2021-10-13 20:35:14,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:35:14,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:35:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:35:14,566 INFO L87 Difference]: Start difference. First operand 9872 states and 48591 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:35:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:18,231 INFO L93 Difference]: Finished difference Result 14761 states and 67331 transitions. [2021-10-13 20:35:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:35:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:35:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:18,293 INFO L225 Difference]: With dead ends: 14761 [2021-10-13 20:35:18,293 INFO L226 Difference]: Without dead ends: 14740 [2021-10-13 20:35:18,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3199.3ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 20:35:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14740 states. [2021-10-13 20:35:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14740 to 10340. [2021-10-13 20:35:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10340 states, 10339 states have (on average 4.918173904632943) internal successors, (50849), 10339 states have internal predecessors, (50849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10340 states to 10340 states and 50849 transitions. [2021-10-13 20:35:18,719 INFO L78 Accepts]: Start accepts. Automaton has 10340 states and 50849 transitions. Word has length 22 [2021-10-13 20:35:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:18,719 INFO L470 AbstractCegarLoop]: Abstraction has 10340 states and 50849 transitions. [2021-10-13 20:35:18,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:35:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 10340 states and 50849 transitions. [2021-10-13 20:35:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:18,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:18,747 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:18,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:18,948 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 [2021-10-13 20:35:18,948 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:18,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:18,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1797842523, now seen corresponding path program 48 times [2021-10-13 20:35:18,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:18,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460577291] [2021-10-13 20:35:18,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:35:18,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:18,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:18,952 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) [2021-10-13 20:35:18,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-13 20:35:20,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 20:35:20,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:20,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:35:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:21,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:22,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:22,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460577291] [2021-10-13 20:35:22,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460577291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:22,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:22,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:35:22,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187256759] [2021-10-13 20:35:22,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:35:22,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:35:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:35:22,044 INFO L87 Difference]: Start difference. First operand 10340 states and 50849 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:26,257 INFO L93 Difference]: Finished difference Result 14764 states and 68303 transitions. [2021-10-13 20:35:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 20:35:26,258 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:35:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:26,318 INFO L225 Difference]: With dead ends: 14764 [2021-10-13 20:35:26,319 INFO L226 Difference]: Without dead ends: 14750 [2021-10-13 20:35:26,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 4025.5ms TimeCoverageRelationStatistics Valid=818, Invalid=2488, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 20:35:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14750 states. [2021-10-13 20:35:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14750 to 10488. [2021-10-13 20:35:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10488 states, 10487 states have (on average 4.92028225421951) internal successors, (51599), 10487 states have internal predecessors, (51599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10488 states to 10488 states and 51599 transitions. [2021-10-13 20:35:26,768 INFO L78 Accepts]: Start accepts. Automaton has 10488 states and 51599 transitions. Word has length 22 [2021-10-13 20:35:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:26,768 INFO L470 AbstractCegarLoop]: Abstraction has 10488 states and 51599 transitions. [2021-10-13 20:35:26,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10488 states and 51599 transitions. [2021-10-13 20:35:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:26,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:26,797 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:26,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:27,003 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 [2021-10-13 20:35:27,004 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:27,004 INFO L82 PathProgramCache]: Analyzing trace with hash -958435289, now seen corresponding path program 49 times [2021-10-13 20:35:27,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:27,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93202695] [2021-10-13 20:35:27,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:35:27,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:27,007 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) [2021-10-13 20:35:27,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-13 20:35:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:35:28,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:35:28,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:29,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:30,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:30,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93202695] [2021-10-13 20:35:30,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93202695] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:30,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:30,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:35:30,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978829224] [2021-10-13 20:35:30,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:35:30,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:35:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:35:30,066 INFO L87 Difference]: Start difference. First operand 10488 states and 51599 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:35:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:33,387 INFO L93 Difference]: Finished difference Result 14388 states and 66650 transitions. [2021-10-13 20:35:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:35:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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 22 [2021-10-13 20:35:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:33,452 INFO L225 Difference]: With dead ends: 14388 [2021-10-13 20:35:33,452 INFO L226 Difference]: Without dead ends: 14374 [2021-10-13 20:35:33,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3080.3ms TimeCoverageRelationStatistics Valid=648, Invalid=1902, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 20:35:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14374 states. [2021-10-13 20:35:33,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14374 to 10564. [2021-10-13 20:35:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10563 states have (on average 4.922559878822304) internal successors, (51997), 10563 states have internal predecessors, (51997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 51997 transitions. [2021-10-13 20:35:33,972 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 51997 transitions. Word has length 22 [2021-10-13 20:35:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:33,972 INFO L470 AbstractCegarLoop]: Abstraction has 10564 states and 51997 transitions. [2021-10-13 20:35:33,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:35:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 51997 transitions. [2021-10-13 20:35:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:34,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:34,001 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:34,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:34,201 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 [2021-10-13 20:35:34,202 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1010933965, now seen corresponding path program 50 times [2021-10-13 20:35:34,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:34,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532747176] [2021-10-13 20:35:34,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:35:34,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:34,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:34,206 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) [2021-10-13 20:35:34,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-13 20:35:35,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:35:35,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:35,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:35:35,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:36,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:35:37,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:37,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532747176] [2021-10-13 20:35:37,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532747176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:37,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:37,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-10-13 20:35:37,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843121525] [2021-10-13 20:35:37,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:35:37,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:35:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:35:37,443 INFO L87 Difference]: Start difference. First operand 10564 states and 51997 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2021-10-13 20:35:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:38,525 INFO L93 Difference]: Finished difference Result 12131 states and 58015 transitions. [2021-10-13 20:35:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 20:35:38,526 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 22 [2021-10-13 20:35:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:38,587 INFO L225 Difference]: With dead ends: 12131 [2021-10-13 20:35:38,587 INFO L226 Difference]: Without dead ends: 12124 [2021-10-13 20:35:38,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 873.4ms TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2021-10-13 20:35:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2021-10-13 20:35:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 10672. [2021-10-13 20:35:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10672 states, 10671 states have (on average 4.922312810420767) internal successors, (52526), 10671 states have internal predecessors, (52526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10672 states to 10672 states and 52526 transitions. [2021-10-13 20:35:39,162 INFO L78 Accepts]: Start accepts. Automaton has 10672 states and 52526 transitions. Word has length 22 [2021-10-13 20:35:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:39,162 INFO L470 AbstractCegarLoop]: Abstraction has 10672 states and 52526 transitions. [2021-10-13 20:35:39,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2021-10-13 20:35:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10672 states and 52526 transitions. [2021-10-13 20:35:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:39,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:39,192 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:39,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:39,392 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 [2021-10-13 20:35:39,393 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 73481101, now seen corresponding path program 51 times [2021-10-13 20:35:39,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:39,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331117840] [2021-10-13 20:35:39,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:35:39,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:39,397 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) [2021-10-13 20:35:39,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-13 20:35:41,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:35:41,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:41,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:35:41,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:41,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:42,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:42,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331117840] [2021-10-13 20:35:42,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331117840] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:42,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:42,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:35:42,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632889273] [2021-10-13 20:35:42,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:35:42,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:35:42,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:35:42,457 INFO L87 Difference]: Start difference. First operand 10672 states and 52526 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:47,342 INFO L93 Difference]: Finished difference Result 14952 states and 68857 transitions. [2021-10-13 20:35:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 20:35:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:35:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:47,403 INFO L225 Difference]: With dead ends: 14952 [2021-10-13 20:35:47,403 INFO L226 Difference]: Without dead ends: 14938 [2021-10-13 20:35:47,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 4557.5ms TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 20:35:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14938 states. [2021-10-13 20:35:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14938 to 10846. [2021-10-13 20:35:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10846 states, 10845 states have (on average 4.932872291378516) internal successors, (53497), 10845 states have internal predecessors, (53497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10846 states to 10846 states and 53497 transitions. [2021-10-13 20:35:47,807 INFO L78 Accepts]: Start accepts. Automaton has 10846 states and 53497 transitions. Word has length 22 [2021-10-13 20:35:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:47,807 INFO L470 AbstractCegarLoop]: Abstraction has 10846 states and 53497 transitions. [2021-10-13 20:35:47,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:35:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 10846 states and 53497 transitions. [2021-10-13 20:35:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:47,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:47,837 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:47,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-13 20:35:48,037 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 [2021-10-13 20:35:48,038 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash -331815423, now seen corresponding path program 52 times [2021-10-13 20:35:48,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:48,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804864137] [2021-10-13 20:35:48,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:35:48,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:48,043 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) [2021-10-13 20:35:48,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-13 20:35:49,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:35:49,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:49,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:35:49,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:50,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:50,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:50,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804864137] [2021-10-13 20:35:50,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804864137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:50,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:50,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:35:50,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999015348] [2021-10-13 20:35:50,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:35:50,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:35:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:35:50,992 INFO L87 Difference]: Start difference. First operand 10846 states and 53497 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:35:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:35:55,649 INFO L93 Difference]: Finished difference Result 15156 states and 69703 transitions. [2021-10-13 20:35:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 20:35:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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 22 [2021-10-13 20:35:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:35:55,711 INFO L225 Difference]: With dead ends: 15156 [2021-10-13 20:35:55,711 INFO L226 Difference]: Without dead ends: 15142 [2021-10-13 20:35:55,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 4378.1ms TimeCoverageRelationStatistics Valid=852, Invalid=2688, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 20:35:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15142 states. [2021-10-13 20:35:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15142 to 11002. [2021-10-13 20:35:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11002 states, 11001 states have (on average 4.939278247432052) internal successors, (54337), 11001 states have internal predecessors, (54337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:35:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11002 states to 11002 states and 54337 transitions. [2021-10-13 20:35:56,233 INFO L78 Accepts]: Start accepts. Automaton has 11002 states and 54337 transitions. Word has length 22 [2021-10-13 20:35:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:35:56,234 INFO L470 AbstractCegarLoop]: Abstraction has 11002 states and 54337 transitions. [2021-10-13 20:35:56,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:35:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11002 states and 54337 transitions. [2021-10-13 20:35:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:35:56,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:35:56,266 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:35:56,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-13 20:35:56,466 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 [2021-10-13 20:35:56,467 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:35:56,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:35:56,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1728154387, now seen corresponding path program 53 times [2021-10-13 20:35:56,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:35:56,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887189092] [2021-10-13 20:35:56,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:35:56,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:35:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:35:56,470 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) [2021-10-13 20:35:56,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-13 20:35:58,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:35:58,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:35:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:35:58,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:35:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:58,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:59,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:59,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887189092] [2021-10-13 20:35:59,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887189092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:59,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:59,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 20:35:59,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334879011] [2021-10-13 20:35:59,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:35:59,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:35:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:35:59,208 INFO L87 Difference]: Start difference. First operand 11002 states and 54337 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:36:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:01,631 INFO L93 Difference]: Finished difference Result 14183 states and 66398 transitions. [2021-10-13 20:36:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:36:01,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:36:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:01,688 INFO L225 Difference]: With dead ends: 14183 [2021-10-13 20:36:01,689 INFO L226 Difference]: Without dead ends: 14150 [2021-10-13 20:36:01,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2193.0ms TimeCoverageRelationStatistics Valid=467, Invalid=1513, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 20:36:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2021-10-13 20:36:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 11480. [2021-10-13 20:36:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11480 states, 11479 states have (on average 4.928739437233208) internal successors, (56577), 11479 states have internal predecessors, (56577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11480 states to 11480 states and 56577 transitions. [2021-10-13 20:36:02,115 INFO L78 Accepts]: Start accepts. Automaton has 11480 states and 56577 transitions. Word has length 22 [2021-10-13 20:36:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:02,115 INFO L470 AbstractCegarLoop]: Abstraction has 11480 states and 56577 transitions. [2021-10-13 20:36:02,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:36:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 11480 states and 56577 transitions. [2021-10-13 20:36:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:02,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:02,148 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:02,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-13 20:36:02,349 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 [2021-10-13 20:36:02,349 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:02,350 INFO L82 PathProgramCache]: Analyzing trace with hash 224601971, now seen corresponding path program 54 times [2021-10-13 20:36:02,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:02,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797668718] [2021-10-13 20:36:02,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:36:02,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:02,353 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) [2021-10-13 20:36:02,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-13 20:36:04,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:36:04,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:04,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:36:04,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:04,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:05,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:05,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797668718] [2021-10-13 20:36:05,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797668718] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:05,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:05,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:36:05,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14810838] [2021-10-13 20:36:05,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:36:05,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:36:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:36:05,810 INFO L87 Difference]: Start difference. First operand 11480 states and 56577 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:10,388 INFO L93 Difference]: Finished difference Result 16791 states and 76521 transitions. [2021-10-13 20:36:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 20:36:10,388 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:36:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:10,462 INFO L225 Difference]: With dead ends: 16791 [2021-10-13 20:36:10,463 INFO L226 Difference]: Without dead ends: 16784 [2021-10-13 20:36:10,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 4188.4ms TimeCoverageRelationStatistics Valid=726, Invalid=2466, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 20:36:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16784 states. [2021-10-13 20:36:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16784 to 11724. [2021-10-13 20:36:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11724 states, 11723 states have (on average 4.929199010492195) internal successors, (57785), 11723 states have internal predecessors, (57785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11724 states to 11724 states and 57785 transitions. [2021-10-13 20:36:11,174 INFO L78 Accepts]: Start accepts. Automaton has 11724 states and 57785 transitions. Word has length 22 [2021-10-13 20:36:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:11,174 INFO L470 AbstractCegarLoop]: Abstraction has 11724 states and 57785 transitions. [2021-10-13 20:36:11,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11724 states and 57785 transitions. [2021-10-13 20:36:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:11,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:11,246 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:11,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-13 20:36:11,460 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 [2021-10-13 20:36:11,461 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash -43409001, now seen corresponding path program 55 times [2021-10-13 20:36:11,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:11,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946567682] [2021-10-13 20:36:11,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:36:11,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:11,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:11,465 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) [2021-10-13 20:36:11,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-13 20:36:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:36:13,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:36:13,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:13,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:14,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:14,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946567682] [2021-10-13 20:36:14,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946567682] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:14,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:14,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:36:14,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039561307] [2021-10-13 20:36:14,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:36:14,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:36:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:36:14,685 INFO L87 Difference]: Start difference. First operand 11724 states and 57785 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:18,473 INFO L93 Difference]: Finished difference Result 16899 states and 77543 transitions. [2021-10-13 20:36:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:36:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:36:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:18,548 INFO L225 Difference]: With dead ends: 16899 [2021-10-13 20:36:18,548 INFO L226 Difference]: Without dead ends: 16892 [2021-10-13 20:36:18,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3488.9ms TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 20:36:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16892 states. [2021-10-13 20:36:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16892 to 11806. [2021-10-13 20:36:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11806 states, 11805 states have (on average 4.9316391359593394) internal successors, (58218), 11805 states have internal predecessors, (58218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11806 states to 11806 states and 58218 transitions. [2021-10-13 20:36:19,227 INFO L78 Accepts]: Start accepts. Automaton has 11806 states and 58218 transitions. Word has length 22 [2021-10-13 20:36:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:19,228 INFO L470 AbstractCegarLoop]: Abstraction has 11806 states and 58218 transitions. [2021-10-13 20:36:19,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 11806 states and 58218 transitions. [2021-10-13 20:36:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:19,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:19,263 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:19,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-13 20:36:19,469 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 [2021-10-13 20:36:19,470 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:19,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1544767621, now seen corresponding path program 56 times [2021-10-13 20:36:19,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:19,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430461017] [2021-10-13 20:36:19,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:36:19,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:19,473 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) [2021-10-13 20:36:19,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-13 20:36:21,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:36:21,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:21,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:36:21,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:21,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:36:23,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:23,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430461017] [2021-10-13 20:36:23,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430461017] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:23,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:23,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:36:23,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079101114] [2021-10-13 20:36:23,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:36:23,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:36:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:36:23,017 INFO L87 Difference]: Start difference. First operand 11806 states and 58218 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:36:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:26,262 INFO L93 Difference]: Finished difference Result 16048 states and 74503 transitions. [2021-10-13 20:36:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:36:26,262 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2021-10-13 20:36:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:26,323 INFO L225 Difference]: With dead ends: 16048 [2021-10-13 20:36:26,324 INFO L226 Difference]: Without dead ends: 16034 [2021-10-13 20:36:26,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 3063.6ms TimeCoverageRelationStatistics Valid=529, Invalid=1451, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 20:36:26,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16034 states. [2021-10-13 20:36:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16034 to 11874. [2021-10-13 20:36:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11874 states, 11873 states have (on average 4.934136275583256) internal successors, (58583), 11873 states have internal predecessors, (58583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11874 states to 11874 states and 58583 transitions. [2021-10-13 20:36:26,911 INFO L78 Accepts]: Start accepts. Automaton has 11874 states and 58583 transitions. Word has length 22 [2021-10-13 20:36:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:26,912 INFO L470 AbstractCegarLoop]: Abstraction has 11874 states and 58583 transitions. [2021-10-13 20:36:26,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2021-10-13 20:36:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11874 states and 58583 transitions. [2021-10-13 20:36:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:26,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:26,949 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:26,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-13 20:36:27,157 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 [2021-10-13 20:36:27,158 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 937783493, now seen corresponding path program 57 times [2021-10-13 20:36:27,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:27,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391127429] [2021-10-13 20:36:27,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:36:27,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:27,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:27,162 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) [2021-10-13 20:36:27,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-13 20:36:29,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:36:29,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:29,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:36:29,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:29,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:30,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:30,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391127429] [2021-10-13 20:36:30,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391127429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:30,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:30,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:36:30,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267946250] [2021-10-13 20:36:30,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:36:30,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:36:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:36:30,837 INFO L87 Difference]: Start difference. First operand 11874 states and 58583 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:35,038 INFO L93 Difference]: Finished difference Result 16280 states and 75355 transitions. [2021-10-13 20:36:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:36:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:36:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:35,098 INFO L225 Difference]: With dead ends: 16280 [2021-10-13 20:36:35,099 INFO L226 Difference]: Without dead ends: 16266 [2021-10-13 20:36:35,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3861.5ms TimeCoverageRelationStatistics Valid=662, Invalid=2200, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:36:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2021-10-13 20:36:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 12032. [2021-10-13 20:36:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12032 states, 12031 states have (on average 4.942398803092012) internal successors, (59462), 12031 states have internal predecessors, (59462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12032 states to 12032 states and 59462 transitions. [2021-10-13 20:36:35,554 INFO L78 Accepts]: Start accepts. Automaton has 12032 states and 59462 transitions. Word has length 22 [2021-10-13 20:36:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:35,554 INFO L470 AbstractCegarLoop]: Abstraction has 12032 states and 59462 transitions. [2021-10-13 20:36:35,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12032 states and 59462 transitions. [2021-10-13 20:36:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:35,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:35,677 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:35,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-13 20:36:35,877 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 [2021-10-13 20:36:35,877 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:35,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:35,878 INFO L82 PathProgramCache]: Analyzing trace with hash -651776149, now seen corresponding path program 58 times [2021-10-13 20:36:35,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:35,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456726959] [2021-10-13 20:36:35,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:36:35,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:35,880 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) [2021-10-13 20:36:35,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-13 20:36:37,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:36:37,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:37,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:36:37,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:38,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:39,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:39,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456726959] [2021-10-13 20:36:39,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456726959] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:39,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:39,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:36:39,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141585280] [2021-10-13 20:36:39,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:36:39,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:36:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:36:39,391 INFO L87 Difference]: Start difference. First operand 12032 states and 59462 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:44,551 INFO L93 Difference]: Finished difference Result 17132 states and 79598 transitions. [2021-10-13 20:36:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 20:36:44,552 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:36:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:44,622 INFO L225 Difference]: With dead ends: 17132 [2021-10-13 20:36:44,622 INFO L226 Difference]: Without dead ends: 17118 [2021-10-13 20:36:44,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 4749.6ms TimeCoverageRelationStatistics Valid=864, Invalid=2796, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 20:36:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17118 states. [2021-10-13 20:36:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17118 to 12192. [2021-10-13 20:36:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 12191 states have (on average 4.953080141087687) internal successors, (60383), 12191 states have internal predecessors, (60383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 60383 transitions. [2021-10-13 20:36:45,161 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 60383 transitions. Word has length 22 [2021-10-13 20:36:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:45,161 INFO L470 AbstractCegarLoop]: Abstraction has 12192 states and 60383 transitions. [2021-10-13 20:36:45,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:36:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 60383 transitions. [2021-10-13 20:36:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:45,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:45,194 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:45,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-13 20:36:45,394 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 [2021-10-13 20:36:45,395 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:45,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1051739091, now seen corresponding path program 59 times [2021-10-13 20:36:45,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:45,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164044719] [2021-10-13 20:36:45,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:36:45,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:45,398 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) [2021-10-13 20:36:45,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-13 20:36:47,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:36:47,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:47,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:36:47,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:36:47,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:48,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:48,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164044719] [2021-10-13 20:36:48,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164044719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:48,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:48,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-13 20:36:48,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833301800] [2021-10-13 20:36:48,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:36:48,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:36:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:36:48,649 INFO L87 Difference]: Start difference. First operand 12192 states and 60383 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:36:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:53,491 INFO L93 Difference]: Finished difference Result 16114 states and 74248 transitions. [2021-10-13 20:36:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:36:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:36:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:53,584 INFO L225 Difference]: With dead ends: 16114 [2021-10-13 20:36:53,584 INFO L226 Difference]: Without dead ends: 16067 [2021-10-13 20:36:53,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 4043.0ms TimeCoverageRelationStatistics Valid=815, Invalid=2967, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 20:36:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16067 states. [2021-10-13 20:36:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 12460. [2021-10-13 20:36:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12460 states, 12459 states have (on average 4.94879203788426) internal successors, (61657), 12459 states have internal predecessors, (61657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:36:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12460 states to 12460 states and 61657 transitions. [2021-10-13 20:36:54,138 INFO L78 Accepts]: Start accepts. Automaton has 12460 states and 61657 transitions. Word has length 22 [2021-10-13 20:36:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:54,138 INFO L470 AbstractCegarLoop]: Abstraction has 12460 states and 61657 transitions. [2021-10-13 20:36:54,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:36:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand 12460 states and 61657 transitions. [2021-10-13 20:36:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:36:54,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:54,179 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:36:54,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-13 20:36:54,388 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 [2021-10-13 20:36:54,389 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:36:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2019616589, now seen corresponding path program 60 times [2021-10-13 20:36:54,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:54,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437202847] [2021-10-13 20:36:54,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:36:54,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:54,391 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) [2021-10-13 20:36:54,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-13 20:36:56,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:36:56,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:56,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:36:56,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:57,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:58,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:58,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437202847] [2021-10-13 20:36:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437202847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:58,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:36:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769796146] [2021-10-13 20:36:58,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:36:58,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:36:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:36:58,410 INFO L87 Difference]: Start difference. First operand 12460 states and 61657 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:37:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:04,626 INFO L93 Difference]: Finished difference Result 23468 states and 105199 transitions. [2021-10-13 20:37:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-13 20:37:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:37:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:04,727 INFO L225 Difference]: With dead ends: 23468 [2021-10-13 20:37:04,727 INFO L226 Difference]: Without dead ends: 23447 [2021-10-13 20:37:04,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 5392.7ms TimeCoverageRelationStatistics Valid=1087, Invalid=4765, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 20:37:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23447 states. [2021-10-13 20:37:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23447 to 13424. [2021-10-13 20:37:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 13423 states have (on average 4.955896595395962) internal successors, (66523), 13423 states have internal predecessors, (66523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 66523 transitions. [2021-10-13 20:37:05,333 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 66523 transitions. Word has length 22 [2021-10-13 20:37:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:05,334 INFO L470 AbstractCegarLoop]: Abstraction has 13424 states and 66523 transitions. [2021-10-13 20:37:05,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:37:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 66523 transitions. [2021-10-13 20:37:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:05,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:05,494 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:05,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-13 20:37:05,700 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 [2021-10-13 20:37:05,701 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:05,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:05,701 INFO L82 PathProgramCache]: Analyzing trace with hash 581097583, now seen corresponding path program 61 times [2021-10-13 20:37:05,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:05,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677128608] [2021-10-13 20:37:05,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:37:05,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:05,704 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) [2021-10-13 20:37:05,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-13 20:37:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:37:07,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:37:07,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:08,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:09,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:09,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677128608] [2021-10-13 20:37:09,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677128608] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:09,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:09,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:37:09,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486228107] [2021-10-13 20:37:09,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:37:09,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:37:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:37:09,166 INFO L87 Difference]: Start difference. First operand 13424 states and 66523 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:12,709 INFO L93 Difference]: Finished difference Result 18210 states and 85018 transitions. [2021-10-13 20:37:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:37:12,709 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:37:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:12,789 INFO L225 Difference]: With dead ends: 18210 [2021-10-13 20:37:12,789 INFO L226 Difference]: Without dead ends: 18172 [2021-10-13 20:37:12,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3229.6ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 20:37:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18172 states. [2021-10-13 20:37:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18172 to 13678. [2021-10-13 20:37:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13678 states, 13677 states have (on average 4.956276961321928) internal successors, (67787), 13677 states have internal predecessors, (67787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13678 states to 13678 states and 67787 transitions. [2021-10-13 20:37:13,495 INFO L78 Accepts]: Start accepts. Automaton has 13678 states and 67787 transitions. Word has length 22 [2021-10-13 20:37:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:13,495 INFO L470 AbstractCegarLoop]: Abstraction has 13678 states and 67787 transitions. [2021-10-13 20:37:13,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 13678 states and 67787 transitions. [2021-10-13 20:37:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:13,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:13,536 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:13,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-13 20:37:13,737 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 [2021-10-13 20:37:13,737 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:13,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:13,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1325052839, now seen corresponding path program 62 times [2021-10-13 20:37:13,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:13,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325678126] [2021-10-13 20:37:13,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:37:13,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:13,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:13,741 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) [2021-10-13 20:37:13,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-13 20:37:16,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:37:16,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:37:16,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:37:16,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:16,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:37:17,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:17,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325678126] [2021-10-13 20:37:17,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325678126] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:17,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:17,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-10-13 20:37:17,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403110388] [2021-10-13 20:37:17,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:37:17,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:37:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:37:17,569 INFO L87 Difference]: Start difference. First operand 13678 states and 67787 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-13 20:37:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:18,947 INFO L93 Difference]: Finished difference Result 16629 states and 79431 transitions. [2021-10-13 20:37:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:37:18,948 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 22 [2021-10-13 20:37:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:19,062 INFO L225 Difference]: With dead ends: 16629 [2021-10-13 20:37:19,063 INFO L226 Difference]: Without dead ends: 16622 [2021-10-13 20:37:19,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1136.8ms TimeCoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2021-10-13 20:37:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16622 states. [2021-10-13 20:37:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16622 to 13732. [2021-10-13 20:37:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13732 states, 13731 states have (on average 4.95608477168451) internal successors, (68052), 13731 states have internal predecessors, (68052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13732 states to 13732 states and 68052 transitions. [2021-10-13 20:37:19,851 INFO L78 Accepts]: Start accepts. Automaton has 13732 states and 68052 transitions. Word has length 22 [2021-10-13 20:37:19,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:19,851 INFO L470 AbstractCegarLoop]: Abstraction has 13732 states and 68052 transitions. [2021-10-13 20:37:19,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-13 20:37:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13732 states and 68052 transitions. [2021-10-13 20:37:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:19,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:19,894 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:19,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-13 20:37:20,103 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 [2021-10-13 20:37:20,104 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:20,104 INFO L82 PathProgramCache]: Analyzing trace with hash -493110349, now seen corresponding path program 63 times [2021-10-13 20:37:20,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:20,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084605300] [2021-10-13 20:37:20,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:37:20,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:20,107 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) [2021-10-13 20:37:20,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-13 20:37:22,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:37:22,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:37:22,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:37:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:23,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:24,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:24,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084605300] [2021-10-13 20:37:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084605300] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:24,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:24,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:37:24,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459361454] [2021-10-13 20:37:24,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:37:24,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:37:24,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:37:24,040 INFO L87 Difference]: Start difference. First operand 13732 states and 68052 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:27,333 INFO L93 Difference]: Finished difference Result 19150 states and 89507 transitions. [2021-10-13 20:37:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 20:37:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:37:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:27,418 INFO L225 Difference]: With dead ends: 19150 [2021-10-13 20:37:27,418 INFO L226 Difference]: Without dead ends: 19136 [2021-10-13 20:37:27,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 3093.6ms TimeCoverageRelationStatistics Valid=547, Invalid=1523, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 20:37:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19136 states. [2021-10-13 20:37:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19136 to 13880. [2021-10-13 20:37:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13880 states, 13879 states have (on average 4.954679731969162) internal successors, (68766), 13879 states have internal predecessors, (68766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13880 states to 13880 states and 68766 transitions. [2021-10-13 20:37:28,203 INFO L78 Accepts]: Start accepts. Automaton has 13880 states and 68766 transitions. Word has length 22 [2021-10-13 20:37:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:28,204 INFO L470 AbstractCegarLoop]: Abstraction has 13880 states and 68766 transitions. [2021-10-13 20:37:28,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13880 states and 68766 transitions. [2021-10-13 20:37:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:28,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:28,247 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:28,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-13 20:37:28,447 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 [2021-10-13 20:37:28,447 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1120456385, now seen corresponding path program 64 times [2021-10-13 20:37:28,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:28,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044803588] [2021-10-13 20:37:28,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:37:28,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:28,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:28,451 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) [2021-10-13 20:37:28,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-13 20:37:30,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:37:30,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:37:30,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:37:30,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:31,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:32,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:32,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044803588] [2021-10-13 20:37:32,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044803588] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:32,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:32,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:37:32,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066597079] [2021-10-13 20:37:32,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:37:32,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:37:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:37:32,192 INFO L87 Difference]: Start difference. First operand 13880 states and 68766 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:37,813 INFO L93 Difference]: Finished difference Result 19424 states and 90758 transitions. [2021-10-13 20:37:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:37:37,813 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:37:37,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:37,893 INFO L225 Difference]: With dead ends: 19424 [2021-10-13 20:37:37,893 INFO L226 Difference]: Without dead ends: 19410 [2021-10-13 20:37:37,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 5107.9ms TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 20:37:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19410 states. [2021-10-13 20:37:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19410 to 13982. [2021-10-13 20:37:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13982 states, 13981 states have (on average 4.959731063586296) internal successors, (69342), 13981 states have internal predecessors, (69342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13982 states to 13982 states and 69342 transitions. [2021-10-13 20:37:38,521 INFO L78 Accepts]: Start accepts. Automaton has 13982 states and 69342 transitions. Word has length 22 [2021-10-13 20:37:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:38,521 INFO L470 AbstractCegarLoop]: Abstraction has 13982 states and 69342 transitions. [2021-10-13 20:37:38,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13982 states and 69342 transitions. [2021-10-13 20:37:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:38,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:38,562 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:38,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-13 20:37:38,762 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 [2021-10-13 20:37:38,763 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:38,763 INFO L82 PathProgramCache]: Analyzing trace with hash 513472257, now seen corresponding path program 65 times [2021-10-13 20:37:38,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:38,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15202357] [2021-10-13 20:37:38,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:37:38,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:38,766 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) [2021-10-13 20:37:38,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-13 20:37:40,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 20:37:40,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:37:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:37:40,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:42,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:42,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:42,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15202357] [2021-10-13 20:37:42,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15202357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:42,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:42,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-13 20:37:42,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313908360] [2021-10-13 20:37:42,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:37:42,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:37:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:37:42,837 INFO L87 Difference]: Start difference. First operand 13982 states and 69342 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:48,413 INFO L93 Difference]: Finished difference Result 18441 states and 85608 transitions. [2021-10-13 20:37:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-13 20:37:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:37:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:48,487 INFO L225 Difference]: With dead ends: 18441 [2021-10-13 20:37:48,487 INFO L226 Difference]: Without dead ends: 18406 [2021-10-13 20:37:48,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 4724.1ms TimeCoverageRelationStatistics Valid=827, Invalid=3333, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 20:37:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2021-10-13 20:37:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 14306. [2021-10-13 20:37:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14306 states, 14305 states have (on average 4.971408598392171) internal successors, (71116), 14305 states have internal predecessors, (71116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14306 states to 14306 states and 71116 transitions. [2021-10-13 20:37:49,129 INFO L78 Accepts]: Start accepts. Automaton has 14306 states and 71116 transitions. Word has length 22 [2021-10-13 20:37:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:49,129 INFO L470 AbstractCegarLoop]: Abstraction has 14306 states and 71116 transitions. [2021-10-13 20:37:49,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:37:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14306 states and 71116 transitions. [2021-10-13 20:37:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:49,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:49,183 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:49,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-10-13 20:37:49,384 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 [2021-10-13 20:37:49,384 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:49,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1076087385, now seen corresponding path program 66 times [2021-10-13 20:37:49,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:49,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788120307] [2021-10-13 20:37:49,386 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:37:49,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:49,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:49,388 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) [2021-10-13 20:37:49,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-13 20:37:51,767 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:37:51,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:37:51,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:37:51,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:52,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:53,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:53,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788120307] [2021-10-13 20:37:53,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788120307] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:53,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:53,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:37:53,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966120936] [2021-10-13 20:37:53,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:37:53,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:37:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:37:53,572 INFO L87 Difference]: Start difference. First operand 14306 states and 71116 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:37:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:57,873 INFO L93 Difference]: Finished difference Result 21330 states and 99290 transitions. [2021-10-13 20:37:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 20:37:57,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:37:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:57,967 INFO L225 Difference]: With dead ends: 21330 [2021-10-13 20:37:57,967 INFO L226 Difference]: Without dead ends: 21316 [2021-10-13 20:37:57,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 3961.7ms TimeCoverageRelationStatistics Valid=578, Invalid=2392, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 20:37:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21316 states. [2021-10-13 20:37:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21316 to 14598. [2021-10-13 20:37:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14598 states, 14597 states have (on average 4.98657258340755) internal successors, (72789), 14597 states have internal predecessors, (72789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14598 states to 14598 states and 72789 transitions. [2021-10-13 20:37:58,697 INFO L78 Accepts]: Start accepts. Automaton has 14598 states and 72789 transitions. Word has length 22 [2021-10-13 20:37:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:58,698 INFO L470 AbstractCegarLoop]: Abstraction has 14598 states and 72789 transitions. [2021-10-13 20:37:58,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:37:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 14598 states and 72789 transitions. [2021-10-13 20:37:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:58,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:58,745 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:37:58,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-13 20:37:58,946 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 [2021-10-13 20:37:58,946 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:37:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1113777439, now seen corresponding path program 67 times [2021-10-13 20:37:58,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:58,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846084680] [2021-10-13 20:37:58,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:37:58,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:58,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:58,950 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) [2021-10-13 20:37:58,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-13 20:38:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:38:01,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:38:01,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:01,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:38:02,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:02,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846084680] [2021-10-13 20:38:02,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846084680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:02,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:02,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-13 20:38:02,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783039409] [2021-10-13 20:38:02,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:38:02,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:38:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:38:02,651 INFO L87 Difference]: Start difference. First operand 14598 states and 72789 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:38:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:38:05,018 INFO L93 Difference]: Finished difference Result 19209 states and 90619 transitions. [2021-10-13 20:38:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 20:38:05,018 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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 22 [2021-10-13 20:38:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:38:05,121 INFO L225 Difference]: With dead ends: 19209 [2021-10-13 20:38:05,122 INFO L226 Difference]: Without dead ends: 19202 [2021-10-13 20:38:05,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2060.1ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:38:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19202 states. [2021-10-13 20:38:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19202 to 14792. [2021-10-13 20:38:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14792 states, 14791 states have (on average 4.9810019606517475) internal successors, (73674), 14791 states have internal predecessors, (73674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14792 states to 14792 states and 73674 transitions. [2021-10-13 20:38:05,822 INFO L78 Accepts]: Start accepts. Automaton has 14792 states and 73674 transitions. Word has length 22 [2021-10-13 20:38:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:38:05,822 INFO L470 AbstractCegarLoop]: Abstraction has 14792 states and 73674 transitions. [2021-10-13 20:38:05,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 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) [2021-10-13 20:38:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 14792 states and 73674 transitions. [2021-10-13 20:38:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:38:05,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:38:05,864 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:38:05,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-13 20:38:06,072 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 [2021-10-13 20:38:06,073 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:38:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:38:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash -598782543, now seen corresponding path program 68 times [2021-10-13 20:38:06,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:38:06,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001138822] [2021-10-13 20:38:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:38:06,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:38:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:38:06,076 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) [2021-10-13 20:38:06,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-13 20:38:08,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:38:08,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:38:08,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:38:08,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:09,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:10,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:10,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001138822] [2021-10-13 20:38:10,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001138822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:10,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:10,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:38:10,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352368639] [2021-10-13 20:38:10,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:38:10,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:38:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:38:10,267 INFO L87 Difference]: Start difference. First operand 14792 states and 73674 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:38:14,925 INFO L93 Difference]: Finished difference Result 20436 states and 95451 transitions. [2021-10-13 20:38:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 20:38:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 20:38:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:38:15,016 INFO L225 Difference]: With dead ends: 20436 [2021-10-13 20:38:15,016 INFO L226 Difference]: Without dead ends: 20422 [2021-10-13 20:38:15,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 4321.1ms TimeCoverageRelationStatistics Valid=850, Invalid=2932, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 20:38:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20422 states. [2021-10-13 20:38:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20422 to 14982. [2021-10-13 20:38:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14982 states, 14981 states have (on average 4.988652292904345) internal successors, (74735), 14981 states have internal predecessors, (74735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14982 states to 14982 states and 74735 transitions. [2021-10-13 20:38:15,700 INFO L78 Accepts]: Start accepts. Automaton has 14982 states and 74735 transitions. Word has length 22 [2021-10-13 20:38:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:38:15,700 INFO L470 AbstractCegarLoop]: Abstraction has 14982 states and 74735 transitions. [2021-10-13 20:38:15,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 14982 states and 74735 transitions. [2021-10-13 20:38:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:38:15,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:38:15,745 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:38:15,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-13 20:38:15,946 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 [2021-10-13 20:38:15,946 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:38:15,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:38:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash -583491623, now seen corresponding path program 69 times [2021-10-13 20:38:15,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:38:15,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655510701] [2021-10-13 20:38:15,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:38:15,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:38:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:38:15,950 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) [2021-10-13 20:38:15,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-13 20:38:18,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:38:18,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:38:18,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:38:18,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:19,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:19,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:19,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655510701] [2021-10-13 20:38:19,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655510701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:19,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:19,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:38:19,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061165018] [2021-10-13 20:38:19,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:38:19,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:38:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:38:19,990 INFO L87 Difference]: Start difference. First operand 14982 states and 74735 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:38:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:38:24,970 INFO L93 Difference]: Finished difference Result 20798 states and 97351 transitions. [2021-10-13 20:38:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 20:38:24,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2021-10-13 20:38:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:38:25,094 INFO L225 Difference]: With dead ends: 20798 [2021-10-13 20:38:25,094 INFO L226 Difference]: Without dead ends: 20784 [2021-10-13 20:38:25,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 4578.1ms TimeCoverageRelationStatistics Valid=872, Invalid=2788, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 20:38:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20784 states. [2021-10-13 20:38:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20784 to 15108. [2021-10-13 20:38:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15108 states, 15107 states have (on average 4.993976302376382) internal successors, (75444), 15107 states have internal predecessors, (75444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15108 states to 15108 states and 75444 transitions. [2021-10-13 20:38:25,906 INFO L78 Accepts]: Start accepts. Automaton has 15108 states and 75444 transitions. Word has length 22 [2021-10-13 20:38:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:38:25,907 INFO L470 AbstractCegarLoop]: Abstraction has 15108 states and 75444 transitions. [2021-10-13 20:38:25,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) [2021-10-13 20:38:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15108 states and 75444 transitions. [2021-10-13 20:38:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:38:25,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:38:25,952 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:38:25,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-13 20:38:26,165 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 [2021-10-13 20:38:26,165 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:38:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:38:26,167 INFO L82 PathProgramCache]: Analyzing trace with hash -988788147, now seen corresponding path program 70 times [2021-10-13 20:38:26,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:38:26,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522483281] [2021-10-13 20:38:26,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:38:26,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:38:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:38:26,170 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) [2021-10-13 20:38:26,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-13 20:38:28,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:38:28,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:38:28,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:38:28,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:29,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:29,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:29,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522483281] [2021-10-13 20:38:29,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522483281] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:29,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:29,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:38:29,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971866317] [2021-10-13 20:38:29,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:38:29,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:38:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:38:29,880 INFO L87 Difference]: Start difference. First operand 15108 states and 75444 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:38:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:38:34,882 INFO L93 Difference]: Finished difference Result 21728 states and 101240 transitions. [2021-10-13 20:38:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 20:38:34,883 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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 22 [2021-10-13 20:38:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:38:34,984 INFO L225 Difference]: With dead ends: 21728 [2021-10-13 20:38:34,985 INFO L226 Difference]: Without dead ends: 21714 [2021-10-13 20:38:34,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 4642.4ms TimeCoverageRelationStatistics Valid=916, Invalid=2866, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 20:38:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21714 states. [2021-10-13 20:38:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21714 to 15348. [2021-10-13 20:38:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15348 states, 15347 states have (on average 5.001238026975956) internal successors, (76754), 15347 states have internal predecessors, (76754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15348 states to 15348 states and 76754 transitions. [2021-10-13 20:38:35,858 INFO L78 Accepts]: Start accepts. Automaton has 15348 states and 76754 transitions. Word has length 22 [2021-10-13 20:38:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:38:35,859 INFO L470 AbstractCegarLoop]: Abstraction has 15348 states and 76754 transitions. [2021-10-13 20:38:35,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:38:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15348 states and 76754 transitions. [2021-10-13 20:38:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:38:35,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:38:35,905 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:38:35,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-13 20:38:36,105 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 [2021-10-13 20:38:36,106 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:38:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:38:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1509768249, now seen corresponding path program 71 times [2021-10-13 20:38:36,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:38:36,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837692229] [2021-10-13 20:38:36,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:38:36,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:38:36,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:38:36,109 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) [2021-10-13 20:38:36,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-13 20:38:38,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:38:38,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:38:38,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:38:38,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:39,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:40,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:40,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837692229] [2021-10-13 20:38:40,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837692229] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:40,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:40,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-13 20:38:40,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049520806] [2021-10-13 20:38:40,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:38:40,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:38:40,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:38:40,152 INFO L87 Difference]: Start difference. First operand 15348 states and 76754 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:38:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:38:42,998 INFO L93 Difference]: Finished difference Result 19252 states and 90549 transitions. [2021-10-13 20:38:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 20:38:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:38:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:38:43,085 INFO L225 Difference]: With dead ends: 19252 [2021-10-13 20:38:43,085 INFO L226 Difference]: Without dead ends: 19210 [2021-10-13 20:38:43,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2194.8ms TimeCoverageRelationStatistics Valid=665, Invalid=2197, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:38:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2021-10-13 20:38:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 15750. [2021-10-13 20:38:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15750 states, 15749 states have (on average 4.998222109340276) internal successors, (78717), 15749 states have internal predecessors, (78717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15750 states to 15750 states and 78717 transitions. [2021-10-13 20:38:43,790 INFO L78 Accepts]: Start accepts. Automaton has 15750 states and 78717 transitions. Word has length 22 [2021-10-13 20:38:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:38:43,791 INFO L470 AbstractCegarLoop]: Abstraction has 15750 states and 78717 transitions. [2021-10-13 20:38:43,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:38:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 15750 states and 78717 transitions. [2021-10-13 20:38:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:38:43,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:38:43,840 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:38:43,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-13 20:38:44,040 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 [2021-10-13 20:38:44,041 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:38:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:38:44,042 INFO L82 PathProgramCache]: Analyzing trace with hash -286156633, now seen corresponding path program 72 times [2021-10-13 20:38:44,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:38:44,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504289344] [2021-10-13 20:38:44,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:38:44,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:38:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:38:44,044 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) [2021-10-13 20:38:44,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-13 20:38:46,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:38:46,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:38:46,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:38:46,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:47,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:48,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:48,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504289344] [2021-10-13 20:38:48,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504289344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:48,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:48,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:38:48,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963442841] [2021-10-13 20:38:48,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:38:48,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:38:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:38:48,422 INFO L87 Difference]: Start difference. First operand 15750 states and 78717 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:38:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:38:51,854 INFO L93 Difference]: Finished difference Result 21489 states and 100170 transitions. [2021-10-13 20:38:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:38:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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 22 [2021-10-13 20:38:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:38:51,945 INFO L225 Difference]: With dead ends: 21489 [2021-10-13 20:38:51,946 INFO L226 Difference]: Without dead ends: 21442 [2021-10-13 20:38:51,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 2991.5ms TimeCoverageRelationStatistics Valid=648, Invalid=3012, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 20:38:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21442 states. [2021-10-13 20:38:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21442 to 15994. [2021-10-13 20:38:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15994 states, 15993 states have (on average 4.990245732507972) internal successors, (79809), 15993 states have internal predecessors, (79809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:38:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15994 states to 15994 states and 79809 transitions. [2021-10-13 20:38:52,656 INFO L78 Accepts]: Start accepts. Automaton has 15994 states and 79809 transitions. Word has length 22 [2021-10-13 20:38:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:38:52,657 INFO L470 AbstractCegarLoop]: Abstraction has 15994 states and 79809 transitions. [2021-10-13 20:38:52,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-13 20:38:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 15994 states and 79809 transitions. [2021-10-13 20:38:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:38:52,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:38:52,708 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:38:52,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-13 20:38:52,909 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 [2021-10-13 20:38:52,909 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:38:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:38:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1490777907, now seen corresponding path program 73 times [2021-10-13 20:38:52,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:38:52,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079398290] [2021-10-13 20:38:52,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:38:52,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:38:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:38:52,913 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) [2021-10-13 20:38:52,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-13 20:38:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:38:55,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:38:55,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:38:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:56,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:38:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:38:56,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:38:56,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079398290] [2021-10-13 20:38:56,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079398290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:38:56,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:38:56,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:38:56,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592385526] [2021-10-13 20:38:56,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:38:56,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:38:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:38:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:38:56,915 INFO L87 Difference]: Start difference. First operand 15994 states and 79809 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:39:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:02,473 INFO L93 Difference]: Finished difference Result 21347 states and 100374 transitions. [2021-10-13 20:39:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-13 20:39:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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 22 [2021-10-13 20:39:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:02,618 INFO L225 Difference]: With dead ends: 21347 [2021-10-13 20:39:02,618 INFO L226 Difference]: Without dead ends: 21340 [2021-10-13 20:39:02,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 5027.1ms TimeCoverageRelationStatistics Valid=1079, Invalid=3751, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 20:39:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21340 states. [2021-10-13 20:39:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21340 to 16308. [2021-10-13 20:39:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16308 states, 16307 states have (on average 4.993131783896486) internal successors, (81423), 16307 states have internal predecessors, (81423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16308 states to 16308 states and 81423 transitions. [2021-10-13 20:39:03,591 INFO L78 Accepts]: Start accepts. Automaton has 16308 states and 81423 transitions. Word has length 22 [2021-10-13 20:39:03,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:03,591 INFO L470 AbstractCegarLoop]: Abstraction has 16308 states and 81423 transitions. [2021-10-13 20:39:03,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:39:03,593 INFO L276 IsEmpty]: Start isEmpty. Operand 16308 states and 81423 transitions. [2021-10-13 20:39:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:39:03,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:03,662 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:03,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:03,863 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 [2021-10-13 20:39:03,863 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2024918899, now seen corresponding path program 74 times [2021-10-13 20:39:03,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:03,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558294631] [2021-10-13 20:39:03,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:39:03,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:03,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:03,867 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) [2021-10-13 20:39:03,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-13 20:39:06,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:39:06,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:06,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:39:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:07,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:08,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558294631] [2021-10-13 20:39:08,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558294631] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:08,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:08,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 20:39:08,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585431772] [2021-10-13 20:39:08,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:39:08,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:39:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:39:08,067 INFO L87 Difference]: Start difference. First operand 16308 states and 81423 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:39:13,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:13,237 INFO L93 Difference]: Finished difference Result 21335 states and 100068 transitions. [2021-10-13 20:39:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:39:13,238 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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 22 [2021-10-13 20:39:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:13,339 INFO L225 Difference]: With dead ends: 21335 [2021-10-13 20:39:13,339 INFO L226 Difference]: Without dead ends: 21321 [2021-10-13 20:39:13,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 4535.0ms TimeCoverageRelationStatistics Valid=841, Invalid=2941, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 20:39:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21321 states. [2021-10-13 20:39:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21321 to 16406. [2021-10-13 20:39:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16406 states, 16405 states have (on average 4.993416641267906) internal successors, (81917), 16405 states have internal predecessors, (81917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16406 states to 16406 states and 81917 transitions. [2021-10-13 20:39:14,142 INFO L78 Accepts]: Start accepts. Automaton has 16406 states and 81917 transitions. Word has length 22 [2021-10-13 20:39:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:14,143 INFO L470 AbstractCegarLoop]: Abstraction has 16406 states and 81917 transitions. [2021-10-13 20:39:14,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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) [2021-10-13 20:39:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 16406 states and 81917 transitions. [2021-10-13 20:39:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 20:39:14,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:14,217 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:14,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-13 20:39:14,432 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 [2021-10-13 20:39:14,432 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:14,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1547854602, now seen corresponding path program 75 times [2021-10-13 20:39:14,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:14,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506880833] [2021-10-13 20:39:14,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:39:14,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:14,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:14,436 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:14,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-13 20:39:17,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:39:17,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:17,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:39:17,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 20:39:17,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 20:39:17,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:17,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506880833] [2021-10-13 20:39:17,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506880833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:17,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:17,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-13 20:39:17,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452747016] [2021-10-13 20:39:17,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:39:17,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:39:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:39:17,619 INFO L87 Difference]: Start difference. First operand 16406 states and 81917 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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) [2021-10-13 20:39:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:17,895 INFO L93 Difference]: Finished difference Result 17760 states and 84177 transitions. [2021-10-13 20:39:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:39:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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 23 [2021-10-13 20:39:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:17,976 INFO L225 Difference]: With dead ends: 17760 [2021-10-13 20:39:17,976 INFO L226 Difference]: Without dead ends: 17734 [2021-10-13 20:39:17,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:39:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17734 states. [2021-10-13 20:39:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17734 to 10100. [2021-10-13 20:39:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10100 states, 10099 states have (on average 4.674720269333597) internal successors, (47210), 10099 states have internal predecessors, (47210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10100 states to 10100 states and 47210 transitions. [2021-10-13 20:39:18,508 INFO L78 Accepts]: Start accepts. Automaton has 10100 states and 47210 transitions. Word has length 23 [2021-10-13 20:39:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:18,508 INFO L470 AbstractCegarLoop]: Abstraction has 10100 states and 47210 transitions. [2021-10-13 20:39:18,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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) [2021-10-13 20:39:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10100 states and 47210 transitions. [2021-10-13 20:39:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 20:39:18,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:18,537 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:18,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:18,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:39:18,739 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:18,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1413703133, now seen corresponding path program 76 times [2021-10-13 20:39:18,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:18,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345745756] [2021-10-13 20:39:18,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:39:18,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:18,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:18,741 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:18,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-13 20:39:21,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:39:21,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:21,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 20:39:21,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 20:39:21,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 20:39:21,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:21,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345745756] [2021-10-13 20:39:21,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345745756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:21,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:21,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-10-13 20:39:21,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209284030] [2021-10-13 20:39:21,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:39:21,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:39:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:39:21,634 INFO L87 Difference]: Start difference. First operand 10100 states and 47210 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:21,936 INFO L93 Difference]: Finished difference Result 10864 states and 48692 transitions. [2021-10-13 20:39:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 20:39:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:39:21,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:21,982 INFO L225 Difference]: With dead ends: 10864 [2021-10-13 20:39:21,982 INFO L226 Difference]: Without dead ends: 10864 [2021-10-13 20:39:21,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:39:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2021-10-13 20:39:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 5764. [2021-10-13 20:39:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5764 states, 5763 states have (on average 4.510324483775811) internal successors, (25993), 5763 states have internal predecessors, (25993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 25993 transitions. [2021-10-13 20:39:22,329 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 25993 transitions. Word has length 23 [2021-10-13 20:39:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:22,329 INFO L470 AbstractCegarLoop]: Abstraction has 5764 states and 25993 transitions. [2021-10-13 20:39:22,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 25993 transitions. [2021-10-13 20:39:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 20:39:22,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:22,345 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:22,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:22,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:39:22,546 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1081883966, now seen corresponding path program 77 times [2021-10-13 20:39:22,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:22,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906299131] [2021-10-13 20:39:22,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:39:22,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:22,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:22,549 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:22,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-13 20:39:25,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:39:25,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:39:25,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 20:39:25,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 20:39:25,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:25,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906299131] [2021-10-13 20:39:25,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906299131] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:25,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:25,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 20:39:25,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185500071] [2021-10-13 20:39:25,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:39:25,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:39:25,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:39:25,771 INFO L87 Difference]: Start difference. First operand 5764 states and 25993 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 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) [2021-10-13 20:39:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:25,898 INFO L93 Difference]: Finished difference Result 6026 states and 26206 transitions. [2021-10-13 20:39:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 20:39:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 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 23 [2021-10-13 20:39:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:25,928 INFO L225 Difference]: With dead ends: 6026 [2021-10-13 20:39:25,929 INFO L226 Difference]: Without dead ends: 6026 [2021-10-13 20:39:25,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 20:39:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2021-10-13 20:39:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 4152. [2021-10-13 20:39:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 4.308359431462298) internal successors, (17884), 4151 states have internal predecessors, (17884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 17884 transitions. [2021-10-13 20:39:26,064 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 17884 transitions. Word has length 23 [2021-10-13 20:39:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:26,064 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 17884 transitions. [2021-10-13 20:39:26,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 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) [2021-10-13 20:39:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 17884 transitions. [2021-10-13 20:39:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:39:26,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:26,073 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:26,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:26,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:39:26,274 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash 294997875, now seen corresponding path program 78 times [2021-10-13 20:39:26,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:26,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145955609] [2021-10-13 20:39:26,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:39:26,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:26,277 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:26,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-13 20:39:29,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 20:39:29,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:29,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 20:39:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:29,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:30,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:30,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145955609] [2021-10-13 20:39:30,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145955609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:30,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:30,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:39:30,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199245547] [2021-10-13 20:39:30,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:39:30,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:39:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:39:30,342 INFO L87 Difference]: Start difference. First operand 4152 states and 17884 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:36,482 INFO L93 Difference]: Finished difference Result 8412 states and 32135 transitions. [2021-10-13 20:39:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-13 20:39:36,482 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:39:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:36,510 INFO L225 Difference]: With dead ends: 8412 [2021-10-13 20:39:36,510 INFO L226 Difference]: Without dead ends: 8391 [2021-10-13 20:39:36,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 5822.5ms TimeCoverageRelationStatistics Valid=1737, Invalid=5235, Unknown=0, NotChecked=0, Total=6972 [2021-10-13 20:39:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8391 states. [2021-10-13 20:39:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8391 to 4278. [2021-10-13 20:39:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 4.3151741875146135) internal successors, (18456), 4277 states have internal predecessors, (18456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 18456 transitions. [2021-10-13 20:39:36,722 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 18456 transitions. Word has length 24 [2021-10-13 20:39:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:36,722 INFO L470 AbstractCegarLoop]: Abstraction has 4278 states and 18456 transitions. [2021-10-13 20:39:36,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 18456 transitions. [2021-10-13 20:39:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:39:36,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:36,732 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:36,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-13 20:39:36,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:39:36,933 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1216246861, now seen corresponding path program 79 times [2021-10-13 20:39:36,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:36,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413810644] [2021-10-13 20:39:36,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:39:36,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:36,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:36,935 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:36,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-13 20:39:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:39,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:39:39,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:39,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:39:40,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:40,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413810644] [2021-10-13 20:39:40,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413810644] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:40,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:40,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2021-10-13 20:39:40,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784800414] [2021-10-13 20:39:40,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:39:40,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:39:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:39:40,772 INFO L87 Difference]: Start difference. First operand 4278 states and 18456 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:39:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:45,516 INFO L93 Difference]: Finished difference Result 6828 states and 27403 transitions. [2021-10-13 20:39:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 20:39:45,517 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:39:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:45,554 INFO L225 Difference]: With dead ends: 6828 [2021-10-13 20:39:45,554 INFO L226 Difference]: Without dead ends: 6790 [2021-10-13 20:39:45,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 4373.2ms TimeCoverageRelationStatistics Valid=1133, Invalid=4417, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 20:39:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2021-10-13 20:39:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 4058. [2021-10-13 20:39:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4057 states have (on average 4.324624106482623) internal successors, (17545), 4057 states have internal predecessors, (17545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 17545 transitions. [2021-10-13 20:39:45,695 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 17545 transitions. Word has length 24 [2021-10-13 20:39:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:45,696 INFO L470 AbstractCegarLoop]: Abstraction has 4058 states and 17545 transitions. [2021-10-13 20:39:45,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:39:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 17545 transitions. [2021-10-13 20:39:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:39:45,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:45,705 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:45,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:45,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:39:45,907 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash -63770369, now seen corresponding path program 80 times [2021-10-13 20:39:45,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:45,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652477818] [2021-10-13 20:39:45,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:39:45,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:45,910 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:45,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-13 20:39:48,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:39:48,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:48,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:39:48,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:39:49,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:50,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:50,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652477818] [2021-10-13 20:39:50,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652477818] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:50,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:50,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:39:50,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368300020] [2021-10-13 20:39:50,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:39:50,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:39:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:39:50,069 INFO L87 Difference]: Start difference. First operand 4058 states and 17545 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:39:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:52,856 INFO L93 Difference]: Finished difference Result 6618 states and 26533 transitions. [2021-10-13 20:39:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 20:39:52,856 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:39:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:52,878 INFO L225 Difference]: With dead ends: 6618 [2021-10-13 20:39:52,878 INFO L226 Difference]: Without dead ends: 6568 [2021-10-13 20:39:52,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2630.8ms TimeCoverageRelationStatistics Valid=591, Invalid=2061, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 20:39:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2021-10-13 20:39:53,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 4198. [2021-10-13 20:39:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4198 states, 4197 states have (on average 4.311889444841554) internal successors, (18097), 4197 states have internal predecessors, (18097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 18097 transitions. [2021-10-13 20:39:53,115 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 18097 transitions. Word has length 24 [2021-10-13 20:39:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:53,115 INFO L470 AbstractCegarLoop]: Abstraction has 4198 states and 18097 transitions. [2021-10-13 20:39:53,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:39:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 18097 transitions. [2021-10-13 20:39:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:39:53,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:53,126 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:53,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:53,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:39:53,327 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1759400413, now seen corresponding path program 81 times [2021-10-13 20:39:53,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:53,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087287539] [2021-10-13 20:39:53,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:39:53,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:53,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:53,331 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:39:53,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-13 20:39:56,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:39:56,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:39:56,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:39:56,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:57,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:57,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087287539] [2021-10-13 20:39:57,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087287539] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:39:57,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:39:57,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:39:57,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040917571] [2021-10-13 20:39:57,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:39:57,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:57,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:39:57,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:39:57,401 INFO L87 Difference]: Start difference. First operand 4198 states and 18097 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:05,097 INFO L93 Difference]: Finished difference Result 10295 states and 39700 transitions. [2021-10-13 20:40:05,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-13 20:40:05,097 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:40:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:05,137 INFO L225 Difference]: With dead ends: 10295 [2021-10-13 20:40:05,137 INFO L226 Difference]: Without dead ends: 10239 [2021-10-13 20:40:05,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 7168.0ms TimeCoverageRelationStatistics Valid=1509, Invalid=7611, Unknown=0, NotChecked=0, Total=9120 [2021-10-13 20:40:05,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2021-10-13 20:40:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 4674. [2021-10-13 20:40:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 4.307083244168628) internal successors, (20127), 4673 states have internal predecessors, (20127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 20127 transitions. [2021-10-13 20:40:05,421 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 20127 transitions. Word has length 24 [2021-10-13 20:40:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:05,422 INFO L470 AbstractCegarLoop]: Abstraction has 4674 states and 20127 transitions. [2021-10-13 20:40:05,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 20127 transitions. [2021-10-13 20:40:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:40:05,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:05,433 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:05,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:05,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:05,634 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1685878685, now seen corresponding path program 82 times [2021-10-13 20:40:05,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:05,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579210752] [2021-10-13 20:40:05,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:40:05,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:05,636 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:05,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-13 20:40:08,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:40:08,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:08,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:40:08,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:40:08,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:09,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:09,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579210752] [2021-10-13 20:40:09,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579210752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:09,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:09,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-13 20:40:09,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208369925] [2021-10-13 20:40:09,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 20:40:09,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 20:40:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:40:09,664 INFO L87 Difference]: Start difference. First operand 4674 states and 20127 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:14,759 INFO L93 Difference]: Finished difference Result 8569 states and 33015 transitions. [2021-10-13 20:40:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-13 20:40:14,760 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:40:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:14,789 INFO L225 Difference]: With dead ends: 8569 [2021-10-13 20:40:14,789 INFO L226 Difference]: Without dead ends: 8337 [2021-10-13 20:40:14,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 4444.9ms TimeCoverageRelationStatistics Valid=1173, Invalid=4833, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 20:40:14,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2021-10-13 20:40:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 4840. [2021-10-13 20:40:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4840 states, 4839 states have (on average 4.313907832196735) internal successors, (20875), 4839 states have internal predecessors, (20875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 20875 transitions. [2021-10-13 20:40:14,988 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 20875 transitions. Word has length 24 [2021-10-13 20:40:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:14,988 INFO L470 AbstractCegarLoop]: Abstraction has 4840 states and 20875 transitions. [2021-10-13 20:40:14,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 20875 transitions. [2021-10-13 20:40:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:40:15,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:15,000 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:15,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:15,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:15,201 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002055, now seen corresponding path program 83 times [2021-10-13 20:40:15,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:15,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612420475] [2021-10-13 20:40:15,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:40:15,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:15,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:15,204 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:15,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-13 20:40:17,972 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:40:17,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:17,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:40:17,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:40:18,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:19,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:19,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612420475] [2021-10-13 20:40:19,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612420475] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:19,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:19,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 20:40:19,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374094607] [2021-10-13 20:40:19,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:40:19,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:40:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:40:19,887 INFO L87 Difference]: Start difference. First operand 4840 states and 20875 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:23,313 INFO L93 Difference]: Finished difference Result 8863 states and 35183 transitions. [2021-10-13 20:40:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 20:40:23,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:40:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:23,343 INFO L225 Difference]: With dead ends: 8863 [2021-10-13 20:40:23,343 INFO L226 Difference]: Without dead ends: 8856 [2021-10-13 20:40:23,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 3238.7ms TimeCoverageRelationStatistics Valid=688, Invalid=2282, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 20:40:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8856 states. [2021-10-13 20:40:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8856 to 5146. [2021-10-13 20:40:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5145 states have (on average 4.3055393586005835) internal successors, (22152), 5145 states have internal predecessors, (22152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 22152 transitions. [2021-10-13 20:40:23,550 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 22152 transitions. Word has length 24 [2021-10-13 20:40:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 5146 states and 22152 transitions. [2021-10-13 20:40:23,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 22152 transitions. [2021-10-13 20:40:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:40:23,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:23,563 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:23,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:23,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:23,763 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1429169119, now seen corresponding path program 84 times [2021-10-13 20:40:23,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:23,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992007908] [2021-10-13 20:40:23,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:40:23,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:23,767 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:23,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-13 20:40:26,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:40:26,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:26,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:40:26,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:40:27,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:28,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:28,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992007908] [2021-10-13 20:40:28,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992007908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:28,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:28,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:40:28,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245400602] [2021-10-13 20:40:28,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:40:28,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:40:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:40:28,381 INFO L87 Difference]: Start difference. First operand 5146 states and 22152 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:32,604 INFO L93 Difference]: Finished difference Result 8523 states and 34014 transitions. [2021-10-13 20:40:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 20:40:32,605 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:40:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:32,633 INFO L225 Difference]: With dead ends: 8523 [2021-10-13 20:40:32,633 INFO L226 Difference]: Without dead ends: 8516 [2021-10-13 20:40:32,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 3986.3ms TimeCoverageRelationStatistics Valid=945, Invalid=3345, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 20:40:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8516 states. [2021-10-13 20:40:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8516 to 5300. [2021-10-13 20:40:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 4.321003963011889) internal successors, (22897), 5299 states have internal predecessors, (22897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 22897 transitions. [2021-10-13 20:40:32,834 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 22897 transitions. Word has length 24 [2021-10-13 20:40:32,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:32,834 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 22897 transitions. [2021-10-13 20:40:32,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 22897 transitions. [2021-10-13 20:40:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:40:32,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:32,847 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:32,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:33,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:33,048 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1825291597, now seen corresponding path program 85 times [2021-10-13 20:40:33,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:33,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381347983] [2021-10-13 20:40:33,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:40:33,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:33,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:33,051 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:33,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-13 20:40:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:40:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:40:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:40:36,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:37,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:37,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381347983] [2021-10-13 20:40:37,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381347983] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:37,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:37,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:40:37,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684700818] [2021-10-13 20:40:37,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:40:37,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:40:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:40:37,715 INFO L87 Difference]: Start difference. First operand 5300 states and 22897 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:42,496 INFO L93 Difference]: Finished difference Result 9061 states and 35876 transitions. [2021-10-13 20:40:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 20:40:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:40:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:42,529 INFO L225 Difference]: With dead ends: 9061 [2021-10-13 20:40:42,529 INFO L226 Difference]: Without dead ends: 9054 [2021-10-13 20:40:42,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 4612.8ms TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 20:40:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2021-10-13 20:40:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 5420. [2021-10-13 20:40:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 5419 states have (on average 4.3221996678353936) internal successors, (23422), 5419 states have internal predecessors, (23422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 23422 transitions. [2021-10-13 20:40:42,750 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 23422 transitions. Word has length 24 [2021-10-13 20:40:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:42,750 INFO L470 AbstractCegarLoop]: Abstraction has 5420 states and 23422 transitions. [2021-10-13 20:40:42,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 23422 transitions. [2021-10-13 20:40:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:40:42,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:42,764 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:42,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:42,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:42,968 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1722047369, now seen corresponding path program 86 times [2021-10-13 20:40:42,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:42,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974967845] [2021-10-13 20:40:42,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:40:42,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:42,971 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:42,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-13 20:40:46,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:40:46,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:46,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:40:46,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:46,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:47,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:47,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974967845] [2021-10-13 20:40:47,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974967845] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:47,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:47,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:40:47,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701994581] [2021-10-13 20:40:47,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:40:47,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:40:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:40:47,873 INFO L87 Difference]: Start difference. First operand 5420 states and 23422 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:50,970 INFO L93 Difference]: Finished difference Result 9865 states and 38836 transitions. [2021-10-13 20:40:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:40:50,970 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:40:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:51,007 INFO L225 Difference]: With dead ends: 9865 [2021-10-13 20:40:51,007 INFO L226 Difference]: Without dead ends: 9778 [2021-10-13 20:40:51,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2940.9ms TimeCoverageRelationStatistics Valid=584, Invalid=1866, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 20:40:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9778 states. [2021-10-13 20:40:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9778 to 5778. [2021-10-13 20:40:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 5777 states have (on average 4.312792106629739) internal successors, (24915), 5777 states have internal predecessors, (24915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 24915 transitions. [2021-10-13 20:40:51,255 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 24915 transitions. Word has length 24 [2021-10-13 20:40:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:51,255 INFO L470 AbstractCegarLoop]: Abstraction has 5778 states and 24915 transitions. [2021-10-13 20:40:51,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:40:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 24915 transitions. [2021-10-13 20:40:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:40:51,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:51,269 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:51,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:51,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:51,478 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:51,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1695867035, now seen corresponding path program 87 times [2021-10-13 20:40:51,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:51,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298830130] [2021-10-13 20:40:51,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:40:51,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:51,482 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:51,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-13 20:40:54,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:40:54,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:54,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:40:54,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:55,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:56,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:56,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298830130] [2021-10-13 20:40:56,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298830130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:56,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:56,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:40:56,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884506492] [2021-10-13 20:40:56,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:40:56,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:40:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:40:56,409 INFO L87 Difference]: Start difference. First operand 5778 states and 24915 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:41:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:00,701 INFO L93 Difference]: Finished difference Result 11105 states and 43614 transitions. [2021-10-13 20:41:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 20:41:00,702 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:41:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:00,738 INFO L225 Difference]: With dead ends: 11105 [2021-10-13 20:41:00,738 INFO L226 Difference]: Without dead ends: 11098 [2021-10-13 20:41:00,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4153.7ms TimeCoverageRelationStatistics Valid=783, Invalid=2523, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 20:41:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2021-10-13 20:41:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 5982. [2021-10-13 20:41:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 4.329209162347434) internal successors, (25893), 5981 states have internal predecessors, (25893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 25893 transitions. [2021-10-13 20:41:00,974 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 25893 transitions. Word has length 24 [2021-10-13 20:41:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:00,975 INFO L470 AbstractCegarLoop]: Abstraction has 5982 states and 25893 transitions. [2021-10-13 20:41:00,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:41:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 25893 transitions. [2021-10-13 20:41:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:00,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:00,988 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:01,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:01,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:01,189 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:01,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash 173627947, now seen corresponding path program 88 times [2021-10-13 20:41:01,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:01,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648368856] [2021-10-13 20:41:01,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:41:01,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:01,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:01,192 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:01,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-13 20:41:04,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:41:04,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:41:04,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:41:04,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:41:04,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:41:05,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:05,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648368856] [2021-10-13 20:41:05,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648368856] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:05,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:05,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-13 20:41:05,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826638885] [2021-10-13 20:41:05,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:41:05,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:41:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:41:05,739 INFO L87 Difference]: Start difference. First operand 5982 states and 25893 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:08,899 INFO L93 Difference]: Finished difference Result 10201 states and 40191 transitions. [2021-10-13 20:41:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:41:08,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:41:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:08,933 INFO L225 Difference]: With dead ends: 10201 [2021-10-13 20:41:08,933 INFO L226 Difference]: Without dead ends: 10194 [2021-10-13 20:41:08,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 3037.9ms TimeCoverageRelationStatistics Valid=552, Invalid=1428, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 20:41:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10194 states. [2021-10-13 20:41:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10194 to 6154. [2021-10-13 20:41:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6153 states have (on average 4.333170810986511) internal successors, (26662), 6153 states have internal predecessors, (26662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 26662 transitions. [2021-10-13 20:41:09,176 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 26662 transitions. Word has length 24 [2021-10-13 20:41:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:09,176 INFO L470 AbstractCegarLoop]: Abstraction has 6154 states and 26662 transitions. [2021-10-13 20:41:09,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 26662 transitions. [2021-10-13 20:41:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:09,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:09,192 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:09,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:09,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:09,393 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:09,394 INFO L82 PathProgramCache]: Analyzing trace with hash 549955667, now seen corresponding path program 89 times [2021-10-13 20:41:09,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:09,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618960492] [2021-10-13 20:41:09,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:41:09,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:09,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:09,396 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:09,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-13 20:41:12,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 20:41:12,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:41:12,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:41:12,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:41:13,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:14,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:14,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618960492] [2021-10-13 20:41:14,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618960492] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:14,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:14,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 17 [2021-10-13 20:41:14,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300674293] [2021-10-13 20:41:14,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:41:14,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:41:14,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:41:14,284 INFO L87 Difference]: Start difference. First operand 6154 states and 26662 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-13 20:41:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:15,656 INFO L93 Difference]: Finished difference Result 10337 states and 40546 transitions. [2021-10-13 20:41:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 20:41:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 24 [2021-10-13 20:41:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:15,707 INFO L225 Difference]: With dead ends: 10337 [2021-10-13 20:41:15,707 INFO L226 Difference]: Without dead ends: 10318 [2021-10-13 20:41:15,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1265.5ms TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 20:41:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2021-10-13 20:41:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 6104. [2021-10-13 20:41:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 4.334261838440112) internal successors, (26452), 6103 states have internal predecessors, (26452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 26452 transitions. [2021-10-13 20:41:15,968 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 26452 transitions. Word has length 24 [2021-10-13 20:41:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:15,968 INFO L470 AbstractCegarLoop]: Abstraction has 6104 states and 26452 transitions. [2021-10-13 20:41:15,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-13 20:41:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 26452 transitions. [2021-10-13 20:41:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:15,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:15,984 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:16,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:16,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:16,185 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:16,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:16,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1828597593, now seen corresponding path program 90 times [2021-10-13 20:41:16,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:16,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71271334] [2021-10-13 20:41:16,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:41:16,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:16,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:16,188 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:16,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-13 20:41:19,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:41:19,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:41:19,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:41:19,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:20,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:21,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:21,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71271334] [2021-10-13 20:41:21,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71271334] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:21,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:21,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-10-13 20:41:21,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251442933] [2021-10-13 20:41:21,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 20:41:21,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 20:41:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:41:21,227 INFO L87 Difference]: Start difference. First operand 6104 states and 26452 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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) [2021-10-13 20:41:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:27,049 INFO L93 Difference]: Finished difference Result 10311 states and 40329 transitions. [2021-10-13 20:41:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 20:41:27,050 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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 24 [2021-10-13 20:41:27,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:27,088 INFO L225 Difference]: With dead ends: 10311 [2021-10-13 20:41:27,088 INFO L226 Difference]: Without dead ends: 10154 [2021-10-13 20:41:27,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 5474.6ms TimeCoverageRelationStatistics Valid=1148, Invalid=3964, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 20:41:27,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10154 states. [2021-10-13 20:41:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10154 to 6194. [2021-10-13 20:41:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6194 states, 6193 states have (on average 4.335217180687874) internal successors, (26848), 6193 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 26848 transitions. [2021-10-13 20:41:27,307 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 26848 transitions. Word has length 24 [2021-10-13 20:41:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:27,307 INFO L470 AbstractCegarLoop]: Abstraction has 6194 states and 26848 transitions. [2021-10-13 20:41:27,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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) [2021-10-13 20:41:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 26848 transitions. [2021-10-13 20:41:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:27,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:27,322 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:27,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:27,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:27,523 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:27,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:27,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1417551883, now seen corresponding path program 91 times [2021-10-13 20:41:27,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:27,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515611793] [2021-10-13 20:41:27,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:41:27,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:27,526 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:27,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-13 20:41:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:41:30,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:41:30,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:41:31,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:32,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:32,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515611793] [2021-10-13 20:41:32,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515611793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:32,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:32,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-13 20:41:32,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911492614] [2021-10-13 20:41:32,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 20:41:32,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 20:41:32,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:41:32,353 INFO L87 Difference]: Start difference. First operand 6194 states and 26848 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:38,472 INFO L93 Difference]: Finished difference Result 11349 states and 43830 transitions. [2021-10-13 20:41:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 20:41:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:41:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:38,511 INFO L225 Difference]: With dead ends: 11349 [2021-10-13 20:41:38,511 INFO L226 Difference]: Without dead ends: 11342 [2021-10-13 20:41:38,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 5918.4ms TimeCoverageRelationStatistics Valid=973, Invalid=3449, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 20:41:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11342 states. [2021-10-13 20:41:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11342 to 6238. [2021-10-13 20:41:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 4.335738335738336) internal successors, (27042), 6237 states have internal predecessors, (27042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 27042 transitions. [2021-10-13 20:41:38,852 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 27042 transitions. Word has length 24 [2021-10-13 20:41:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:38,852 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 27042 transitions. [2021-10-13 20:41:38,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 27042 transitions. [2021-10-13 20:41:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:38,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:38,867 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:38,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:39,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:39,074 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:39,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:39,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1392161771, now seen corresponding path program 92 times [2021-10-13 20:41:39,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:39,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804202281] [2021-10-13 20:41:39,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:41:39,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:39,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:39,078 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:39,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-13 20:41:42,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:41:42,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:41:42,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:41:42,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:43,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:44,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:44,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804202281] [2021-10-13 20:41:44,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804202281] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:44,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:44,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:41:44,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730810022] [2021-10-13 20:41:44,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:41:44,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:41:44,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:41:44,160 INFO L87 Difference]: Start difference. First operand 6238 states and 27042 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:41:48,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:48,527 INFO L93 Difference]: Finished difference Result 10970 states and 43555 transitions. [2021-10-13 20:41:48,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 20:41:48,527 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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 24 [2021-10-13 20:41:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:48,566 INFO L225 Difference]: With dead ends: 10970 [2021-10-13 20:41:48,567 INFO L226 Difference]: Without dead ends: 10956 [2021-10-13 20:41:48,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4029.4ms TimeCoverageRelationStatistics Valid=751, Invalid=2111, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:41:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10956 states. [2021-10-13 20:41:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10956 to 6318. [2021-10-13 20:41:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 4.329745132182998) internal successors, (27351), 6317 states have internal predecessors, (27351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 27351 transitions. [2021-10-13 20:41:48,826 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 27351 transitions. Word has length 24 [2021-10-13 20:41:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:48,827 INFO L470 AbstractCegarLoop]: Abstraction has 6318 states and 27351 transitions. [2021-10-13 20:41:48,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 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) [2021-10-13 20:41:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 27351 transitions. [2021-10-13 20:41:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:48,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:48,844 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:48,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:49,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:49,045 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:49,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1768489491, now seen corresponding path program 93 times [2021-10-13 20:41:49,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:49,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405325409] [2021-10-13 20:41:49,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:41:49,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:49,048 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:49,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-13 20:41:52,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 20:41:52,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:41:52,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:41:52,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:53,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:54,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:54,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405325409] [2021-10-13 20:41:54,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405325409] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:54,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:54,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-13 20:41:54,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462322632] [2021-10-13 20:41:54,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:41:54,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:41:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:41:54,239 INFO L87 Difference]: Start difference. First operand 6318 states and 27351 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 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) [2021-10-13 20:41:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:58,125 INFO L93 Difference]: Finished difference Result 10766 states and 42932 transitions. [2021-10-13 20:41:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:41:58,126 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 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 24 [2021-10-13 20:41:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:58,164 INFO L225 Difference]: With dead ends: 10766 [2021-10-13 20:41:58,164 INFO L226 Difference]: Without dead ends: 10752 [2021-10-13 20:41:58,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 3840.3ms TimeCoverageRelationStatistics Valid=736, Invalid=2020, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 20:41:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10752 states. [2021-10-13 20:41:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10752 to 6362. [2021-10-13 20:41:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6361 states have (on average 4.331237226851124) internal successors, (27551), 6361 states have internal predecessors, (27551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 27551 transitions. [2021-10-13 20:41:58,421 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 27551 transitions. Word has length 24 [2021-10-13 20:41:58,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:58,421 INFO L470 AbstractCegarLoop]: Abstraction has 6362 states and 27551 transitions. [2021-10-13 20:41:58,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 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) [2021-10-13 20:41:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 27551 transitions. [2021-10-13 20:41:58,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:41:58,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:58,439 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:58,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2021-10-13 20:41:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:58,640 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:41:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash -572855365, now seen corresponding path program 94 times [2021-10-13 20:41:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:58,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480458109] [2021-10-13 20:41:58,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:41:58,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:58,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:58,643 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:58,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-13 20:42:01,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:42:01,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:42:01,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:42:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:42:02,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:03,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:03,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480458109] [2021-10-13 20:42:03,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480458109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:42:03,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:42:03,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-13 20:42:03,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546269640] [2021-10-13 20:42:03,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 20:42:03,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 20:42:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:42:03,400 INFO L87 Difference]: Start difference. First operand 6362 states and 27551 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:08,159 INFO L93 Difference]: Finished difference Result 10291 states and 40963 transitions. [2021-10-13 20:42:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 20:42:08,159 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 [2021-10-13 20:42:08,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:08,194 INFO L225 Difference]: With dead ends: 10291 [2021-10-13 20:42:08,194 INFO L226 Difference]: Without dead ends: 10240 [2021-10-13 20:42:08,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 4369.7ms TimeCoverageRelationStatistics Valid=874, Invalid=3032, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 20:42:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10240 states. [2021-10-13 20:42:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10240 to 6470. [2021-10-13 20:42:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6469 states have (on average 4.328798886999536) internal successors, (28003), 6469 states have internal predecessors, (28003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 28003 transitions. [2021-10-13 20:42:08,458 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 28003 transitions. Word has length 24 [2021-10-13 20:42:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:08,458 INFO L470 AbstractCegarLoop]: Abstraction has 6470 states and 28003 transitions. [2021-10-13 20:42:08,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 28003 transitions. [2021-10-13 20:42:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:42:08,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:08,475 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:08,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:08,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:42:08,676 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:42:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:08,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1295600933, now seen corresponding path program 95 times [2021-10-13 20:42:08,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:08,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948269332] [2021-10-13 20:42:08,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:42:08,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:08,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:08,680 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:42:08,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-13 20:42:12,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:42:12,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:42:12,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 20:42:12,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:12,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:13,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:13,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948269332] [2021-10-13 20:42:13,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948269332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:42:13,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:42:13,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-10-13 20:42:13,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914123120] [2021-10-13 20:42:13,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 20:42:13,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 20:42:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:42:13,852 INFO L87 Difference]: Start difference. First operand 6470 states and 28003 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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) Received shutdown request... [2021-10-13 20:42:17,944 WARN L223 SmtUtils]: Removed 4 from assertion stack [2021-10-13 20:42:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 20:42:17,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:42:17,962 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:42:17,962 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:42:17,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:18,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:42:18,147 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. [2021-10-13 20:42:18,150 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:42:18,150 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:42:18,150 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:42:18,151 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:42:18,152 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:42:18,152 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:42:18,152 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:42:18,152 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:42:18,152 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:42:18,157 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:42:18,157 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:42:18,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:42:18 BasicIcfg [2021-10-13 20:42:18,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:42:18,160 INFO L168 Benchmark]: Toolchain (without parser) took 747540.33 ms. Allocated memory was 153.1 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 127.6 MB in the beginning and 470.3 MB in the end (delta: -342.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-10-13 20:42:18,160 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:42:18,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.33 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 116.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:42:18,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.90 ms. Allocated memory is still 153.1 MB. Free memory was 115.8 MB in the beginning and 114.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:42:18,161 INFO L168 Benchmark]: Boogie Preprocessor took 41.48 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 112.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:42:18,162 INFO L168 Benchmark]: RCFGBuilder took 766.80 ms. Allocated memory is still 153.1 MB. Free memory was 112.7 MB in the beginning and 134.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2021-10-13 20:42:18,162 INFO L168 Benchmark]: TraceAbstraction took 746216.55 ms. Allocated memory was 153.1 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 133.8 MB in the beginning and 470.3 MB in the end (delta: -336.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-10-13 20:42:18,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 454.33 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 116.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.90 ms. Allocated memory is still 153.1 MB. Free memory was 115.8 MB in the beginning and 114.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.48 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 112.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 766.80 ms. Allocated memory is still 153.1 MB. Free memory was 112.7 MB in the beginning and 134.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 746216.55 ms. Allocated memory was 153.1 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 133.8 MB in the beginning and 470.3 MB in the end (delta: -336.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14976.9ms, 133 PlacesBefore, 43 PlacesAfterwards, 139 TransitionsBefore, 36 TransitionsAfterwards, 3570 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 13 ChoiceCompositions, 143 TotalNumberOfCompositions, 3492 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3492, positive: 3492, positive conditional: 0, positive unconditional: 3492, 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: 2253, positive: 2253, positive conditional: 0, positive unconditional: 2253, 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: 2253, positive: 2220, positive conditional: 0, positive unconditional: 2220, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 961, positive: 961, positive conditional: 0, positive unconditional: 961, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3492, positive: 1239, positive conditional: 0, positive unconditional: 1239, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2253, unknown conditional: 0, unknown unconditional: 2253] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6470states) and FLOYD_HOARE automaton (currently 47 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 14ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 166 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 746062.0ms, OverallIterations: 107, TraceHistogramMax: 4, EmptinessCheckTime: 2436.4ms, AutomataDifference: 376844.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15042.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4918 SDtfs, 39702 SDslu, 42157 SDs, 0 SdLazy, 30271 SolverSat, 12730 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47015.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7669 GetRequests, 2693 SyntacticMatches, 5 SemanticMatches, 4970 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70437 ImplicationChecksByTransitivity, 341911.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16406occurred in iteration=86, InterpolantAutomatonStates: 4496, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34027.0ms AutomataMinimizationTime, 106 MinimizatonAttempts, 354898 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 981.0ms SsaConstructionTime, 20304.1ms SatisfiabilityAnalysisTime, 131912.5ms InterpolantComputationTime, 2249 NumberOfCodeBlocks, 2243 NumberOfCodeBlocksAsserted, 215 NumberOfCheckSat, 4284 ConstructedInterpolants, 6 QuantifiedInterpolants, 60012 SizeOfPredicates, 977 NumberOfNonLiveVariables, 10003 ConjunctsInSsa, 1605 ConjunctsInUnsatCore, 214 InterpolantComputations, 20 PerfectInterpolantSequences, 115/2004 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown