/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/ticket-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:22:39,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:22:39,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:22:39,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:22:39,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:22:39,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:22:39,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:22:39,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:22:39,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:22:39,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:22:39,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:22:39,845 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:22:39,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:22:39,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:22:39,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:22:39,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:22:39,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:22:39,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:22:39,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:22:39,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:22:39,848 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:22:39,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:22:39,848 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:22:39,848 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:22:39,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:22:39,849 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:22:39,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:22:39,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:22:39,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:22:39,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:22:39,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:22:39,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:22:39,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:22:39,851 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:22:39,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:22:39,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:22:39,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:22:39,852 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:22:40,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:22:40,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:22:40,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:22:40,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:22:40,395 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:22:40,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/ticket-3.wvr.c [2021-10-06 21:22:40,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63bb94fa6/095d68c27f6e4cceb7d62549c2fc01b2/FLAG24bee5270 [2021-10-06 21:22:41,170 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:22:41,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-3.wvr.c [2021-10-06 21:22:41,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63bb94fa6/095d68c27f6e4cceb7d62549c2fc01b2/FLAG24bee5270 [2021-10-06 21:22:41,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63bb94fa6/095d68c27f6e4cceb7d62549c2fc01b2 [2021-10-06 21:22:41,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:22:41,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:22:41,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:22:41,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:22:41,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:22:41,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:41,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27bebc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41, skipping insertion in model container [2021-10-06 21:22:41,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:41,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:22:41,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:22:41,832 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/ticket-3.wvr.c[2507,2520] [2021-10-06 21:22:41,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:22:41,862 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:22:41,924 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/ticket-3.wvr.c[2507,2520] [2021-10-06 21:22:41,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:22:41,956 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:22:41,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41 WrapperNode [2021-10-06 21:22:41,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:22:41,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:22:41,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:22:41,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:22:41,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:22:42,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:22:42,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:22:42,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:22:42,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:22:42,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:22:42,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:22:42,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:22:42,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (1/1) ... [2021-10-06 21:22:42,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:22:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:22:42,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:22:42,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:22:42,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:22:42,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:22:42,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:22:42,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:22:42,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:22:42,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:22:42,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:22:42,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:22:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:22:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:22:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:22:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:22:42,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:22:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:22:42,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:22:42,228 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:22:42,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:22:42,917 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-06 21:22:42,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:22:42 BoogieIcfgContainer [2021-10-06 21:22:42,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:22:42,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:22:42,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:22:42,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:22:42,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:22:41" (1/3) ... [2021-10-06 21:22:42,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bfc13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:22:42, skipping insertion in model container [2021-10-06 21:22:42,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:41" (2/3) ... [2021-10-06 21:22:42,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bfc13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:22:42, skipping insertion in model container [2021-10-06 21:22:42,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:22:42" (3/3) ... [2021-10-06 21:22:42,930 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.c [2021-10-06 21:22:42,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:22:42,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:22:42,937 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:22:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,980 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,980 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,981 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,981 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,981 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,982 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,982 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,982 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,988 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,988 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,988 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,989 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,990 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,990 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,990 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,994 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,994 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,995 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,996 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,996 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,996 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,997 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,997 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,997 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,997 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,998 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,998 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:42,999 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,000 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,000 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,000 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,002 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,002 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,014 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,015 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,015 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,018 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,018 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,019 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,020 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,020 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,020 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:43,032 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:22:43,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:22:43,149 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:22:43,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:22:43,172 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:22:43,185 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 139 transitions, 302 flow [2021-10-06 21:22:43,189 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 139 transitions, 302 flow [2021-10-06 21:22:43,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 139 transitions, 302 flow [2021-10-06 21:22:43,306 INFO L129 PetriNetUnfolder]: 5/136 cut-off events. [2021-10-06 21:22:43,310 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:22:43,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 5/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-10-06 21:22:43,335 INFO L116 LiptonReduction]: Number of co-enabled transitions 2512 [2021-10-06 21:22:55,295 INFO L131 LiptonReduction]: Checked pairs total: 8224 [2021-10-06 21:22:55,296 INFO L133 LiptonReduction]: Total number of compositions: 135 [2021-10-06 21:22:55,306 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 120 flow [2021-10-06 21:22:55,389 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1379 states, 1365 states have (on average 3.41025641025641) internal successors, (4655), 1378 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 1379 states, 1365 states have (on average 3.41025641025641) internal successors, (4655), 1378 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:22:55,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:55,404 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:22:55,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash 524, now seen corresponding path program 1 times [2021-10-06 21:22:55,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:55,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994498515] [2021-10-06 21:22:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:55,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:55,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:55,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:22:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:55,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:22:55,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:55,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:55,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:55,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994498515] [2021-10-06 21:22:55,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994498515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:22:55,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:22:55,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:22:55,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644567341] [2021-10-06 21:22:55,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:22:55,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:22:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:22:55,535 INFO L87 Difference]: Start difference. First operand has 1379 states, 1365 states have (on average 3.41025641025641) internal successors, (4655), 1378 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:55,610 INFO L93 Difference]: Finished difference Result 1376 states and 4236 transitions. [2021-10-06 21:22:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:22:55,612 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:22:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:55,665 INFO L225 Difference]: With dead ends: 1376 [2021-10-06 21:22:55,666 INFO L226 Difference]: Without dead ends: 1376 [2021-10-06 21:22:55,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:22:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-06 21:22:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-10-06 21:22:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1365 states have (on average 3.1032967032967034) internal successors, (4236), 1375 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4236 transitions. [2021-10-06 21:22:55,854 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4236 transitions. Word has length 1 [2021-10-06 21:22:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:55,855 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4236 transitions. [2021-10-06 21:22:55,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4236 transitions. [2021-10-06 21:22:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:22:55,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:55,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:22:55,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:56,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:56,060 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:56,062 INFO L82 PathProgramCache]: Analyzing trace with hash 515997, now seen corresponding path program 1 times [2021-10-06 21:22:56,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:56,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590088779] [2021-10-06 21:22:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:56,064 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:56,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:56,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:22:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:56,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:22:56,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:56,493 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:22:56,494 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 34 treesize of output 64 [2021-10-06 21:22:56,510 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 66 treesize of output 64 [2021-10-06 21:22:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:56,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:56,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:56,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590088779] [2021-10-06 21:22:56,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590088779] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:22:56,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:22:56,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:22:56,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112450845] [2021-10-06 21:22:56,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:22:56,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:22:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:22:56,805 INFO L87 Difference]: Start difference. First operand 1376 states and 4236 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:56,877 INFO L93 Difference]: Finished difference Result 1333 states and 4127 transitions. [2021-10-06 21:22:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:22:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:22:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:56,891 INFO L225 Difference]: With dead ends: 1333 [2021-10-06 21:22:56,891 INFO L226 Difference]: Without dead ends: 1333 [2021-10-06 21:22:56,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:22:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-10-06 21:22:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2021-10-06 21:22:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1324 states have (on average 3.117069486404834) internal successors, (4127), 1332 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 4127 transitions. [2021-10-06 21:22:56,951 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 4127 transitions. Word has length 3 [2021-10-06 21:22:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:56,952 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 4127 transitions. [2021-10-06 21:22:56,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 4127 transitions. [2021-10-06 21:22:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:22:56,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:56,953 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:22:56,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:57,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:57,167 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:57,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:57,169 INFO L82 PathProgramCache]: Analyzing trace with hash 515998, now seen corresponding path program 1 times [2021-10-06 21:22:57,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:57,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52298186] [2021-10-06 21:22:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:57,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:57,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:57,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:57,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:22:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:57,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:22:57,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:57,262 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:22:57,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-06 21:22:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:57,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:57,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:57,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52298186] [2021-10-06 21:22:57,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52298186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:22:57,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:22:57,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:22:57,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898603844] [2021-10-06 21:22:57,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:22:57,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:22:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:22:57,304 INFO L87 Difference]: Start difference. First operand 1333 states and 4127 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:57,347 INFO L93 Difference]: Finished difference Result 1290 states and 4018 transitions. [2021-10-06 21:22:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:22:57,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:22:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:57,361 INFO L225 Difference]: With dead ends: 1290 [2021-10-06 21:22:57,361 INFO L226 Difference]: Without dead ends: 1290 [2021-10-06 21:22:57,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:22:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-10-06 21:22:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2021-10-06 21:22:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1283 states have (on average 3.131722525331255) internal successors, (4018), 1289 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4018 transitions. [2021-10-06 21:22:57,425 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4018 transitions. Word has length 3 [2021-10-06 21:22:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:57,425 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 4018 transitions. [2021-10-06 21:22:57,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4018 transitions. [2021-10-06 21:22:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:22:57,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:57,426 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:22:57,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:57,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:57,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash 495886453, now seen corresponding path program 1 times [2021-10-06 21:22:57,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:57,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024127496] [2021-10-06 21:22:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:57,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:57,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:57,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:22:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:57,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:22:57,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:57,732 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:22:57,732 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 [2021-10-06 21:22:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:57,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:57,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:57,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024127496] [2021-10-06 21:22:57,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024127496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:22:57,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:22:57,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:22:57,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040463419] [2021-10-06 21:22:57,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:22:57,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:22:57,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:22:57,786 INFO L87 Difference]: Start difference. First operand 1290 states and 4018 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:57,837 INFO L93 Difference]: Finished difference Result 1242 states and 3894 transitions. [2021-10-06 21:22:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:22:57,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:22:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:57,849 INFO L225 Difference]: With dead ends: 1242 [2021-10-06 21:22:57,849 INFO L226 Difference]: Without dead ends: 1242 [2021-10-06 21:22:57,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:22:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-06 21:22:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1242. [2021-10-06 21:22:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1237 states have (on average 3.1479385610347617) internal successors, (3894), 1241 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3894 transitions. [2021-10-06 21:22:57,925 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3894 transitions. Word has length 5 [2021-10-06 21:22:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:57,926 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 3894 transitions. [2021-10-06 21:22:57,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3894 transitions. [2021-10-06 21:22:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:22:57,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:57,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:22:57,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:58,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:58,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash 495886454, now seen corresponding path program 1 times [2021-10-06 21:22:58,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:58,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040117734] [2021-10-06 21:22:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:58,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:58,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:58,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:58,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:22:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:58,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:22:58,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:58,357 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:22:58,357 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 [2021-10-06 21:22:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:58,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:58,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:58,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040117734] [2021-10-06 21:22:58,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040117734] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:22:58,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:22:58,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:22:58,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212736538] [2021-10-06 21:22:58,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:22:58,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:22:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:22:58,531 INFO L87 Difference]: Start difference. First operand 1242 states and 3894 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:58,571 INFO L93 Difference]: Finished difference Result 1194 states and 3770 transitions. [2021-10-06 21:22:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:22:58,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:22:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:58,582 INFO L225 Difference]: With dead ends: 1194 [2021-10-06 21:22:58,583 INFO L226 Difference]: Without dead ends: 1194 [2021-10-06 21:22:58,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:22:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-06 21:22:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2021-10-06 21:22:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1191 states have (on average 3.165407220822838) internal successors, (3770), 1193 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 3770 transitions. [2021-10-06 21:22:58,635 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 3770 transitions. Word has length 5 [2021-10-06 21:22:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:58,635 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 3770 transitions. [2021-10-06 21:22:58,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 3770 transitions. [2021-10-06 21:22:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:22:58,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:58,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:58,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:58,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:58,850 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:58,852 INFO L82 PathProgramCache]: Analyzing trace with hash -194477975, now seen corresponding path program 1 times [2021-10-06 21:22:58,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:58,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339695597] [2021-10-06 21:22:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:58,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:58,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:58,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:58,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:22:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:58,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:22:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:59,107 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:22:59,108 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 29 treesize of output 59 [2021-10-06 21:22:59,124 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 60 treesize of output 58 [2021-10-06 21:22:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:59,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:59,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:59,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339695597] [2021-10-06 21:22:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339695597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:22:59,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:22:59,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:22:59,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531480444] [2021-10-06 21:22:59,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:22:59,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:59,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:22:59,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:22:59,460 INFO L87 Difference]: Start difference. First operand 1194 states and 3770 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) [2021-10-06 21:22:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:59,513 INFO L93 Difference]: Finished difference Result 942 states and 2882 transitions. [2021-10-06 21:22:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:22:59,514 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 [2021-10-06 21:22:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:59,523 INFO L225 Difference]: With dead ends: 942 [2021-10-06 21:22:59,523 INFO L226 Difference]: Without dead ends: 942 [2021-10-06 21:22:59,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:22:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-06 21:22:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2021-10-06 21:22:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 3.0659574468085107) internal successors, (2882), 941 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2882 transitions. [2021-10-06 21:22:59,581 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2882 transitions. Word has length 7 [2021-10-06 21:22:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:59,581 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2882 transitions. [2021-10-06 21:22:59,581 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) [2021-10-06 21:22:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2882 transitions. [2021-10-06 21:22:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:22:59,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:59,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:59,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:59,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:59,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash -194477974, now seen corresponding path program 1 times [2021-10-06 21:22:59,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:59,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599799217] [2021-10-06 21:22:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:22:59,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:59,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:59,799 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:59,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:22:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:59,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:22:59,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:59,910 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:22:59,915 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 [2021-10-06 21:22:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:59,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:00,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:00,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599799217] [2021-10-06 21:23:00,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599799217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:00,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:00,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:23:00,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451711750] [2021-10-06 21:23:00,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:23:00,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:23:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:23:00,028 INFO L87 Difference]: Start difference. First operand 942 states and 2882 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) [2021-10-06 21:23:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:00,065 INFO L93 Difference]: Finished difference Result 690 states and 1994 transitions. [2021-10-06 21:23:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:00,066 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 [2021-10-06 21:23:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:00,072 INFO L225 Difference]: With dead ends: 690 [2021-10-06 21:23:00,072 INFO L226 Difference]: Without dead ends: 690 [2021-10-06 21:23:00,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:23:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-06 21:23:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2021-10-06 21:23:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.8940493468795356) internal successors, (1994), 689 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1994 transitions. [2021-10-06 21:23:00,099 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1994 transitions. Word has length 7 [2021-10-06 21:23:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:00,099 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1994 transitions. [2021-10-06 21:23:00,100 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) [2021-10-06 21:23:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1994 transitions. [2021-10-06 21:23:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:00,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:00,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:00,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 21:23:00,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:00,326 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)] === [2021-10-06 21:23:00,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash -159741447, now seen corresponding path program 1 times [2021-10-06 21:23:00,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:00,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459929585] [2021-10-06 21:23:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:00,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:00,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:00,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:00,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:23:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:00,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:23:00,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:00,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:00,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:00,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459929585] [2021-10-06 21:23:00,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459929585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:00,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:00,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-06 21:23:00,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335952229] [2021-10-06 21:23:00,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:23:00,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:23:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:23:00,830 INFO L87 Difference]: Start difference. First operand 690 states and 1994 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:01,576 INFO L93 Difference]: Finished difference Result 890 states and 2547 transitions. [2021-10-06 21:23:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:23:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:23:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:01,586 INFO L225 Difference]: With dead ends: 890 [2021-10-06 21:23:01,586 INFO L226 Difference]: Without dead ends: 778 [2021-10-06 21:23:01,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 447.2ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:23:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-10-06 21:23:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 746. [2021-10-06 21:23:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 2.859060402684564) internal successors, (2130), 745 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2130 transitions. [2021-10-06 21:23:01,628 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2130 transitions. Word has length 29 [2021-10-06 21:23:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:01,628 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 2130 transitions. [2021-10-06 21:23:01,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2130 transitions. [2021-10-06 21:23:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:01,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:01,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:01,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-06 21:23:01,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:01,846 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)] === [2021-10-06 21:23:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:01,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1463344571, now seen corresponding path program 2 times [2021-10-06 21:23:01,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:01,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105539100] [2021-10-06 21:23:01,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:01,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:01,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:01,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:01,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:23:01,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:01,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:01,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:23:01,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:02,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:02,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:02,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105539100] [2021-10-06 21:23:02,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105539100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:02,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:02,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:23:02,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147477835] [2021-10-06 21:23:02,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:23:02,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:23:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:23:02,254 INFO L87 Difference]: Start difference. First operand 746 states and 2130 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 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) [2021-10-06 21:23:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:02,791 INFO L93 Difference]: Finished difference Result 812 states and 2140 transitions. [2021-10-06 21:23:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:23:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 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 29 [2021-10-06 21:23:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:02,797 INFO L225 Difference]: With dead ends: 812 [2021-10-06 21:23:02,797 INFO L226 Difference]: Without dead ends: 660 [2021-10-06 21:23:02,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 231.2ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:23:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-06 21:23:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 612. [2021-10-06 21:23:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 2.597381342062193) internal successors, (1587), 611 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1587 transitions. [2021-10-06 21:23:02,823 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1587 transitions. Word has length 29 [2021-10-06 21:23:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:02,823 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1587 transitions. [2021-10-06 21:23:02,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 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) [2021-10-06 21:23:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1587 transitions. [2021-10-06 21:23:02,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:02,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:02,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:02,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:03,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:03,035 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)] === [2021-10-06 21:23:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash -148679533, now seen corresponding path program 3 times [2021-10-06 21:23:03,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:03,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644910329] [2021-10-06 21:23:03,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:03,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:03,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:03,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:23:03,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:03,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:03,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:03,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:03,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:03,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:03,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644910329] [2021-10-06 21:23:03,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644910329] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:03,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:03,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:03,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966376388] [2021-10-06 21:23:03,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:03,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:03,745 INFO L87 Difference]: Start difference. First operand 612 states and 1587 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:04,853 INFO L93 Difference]: Finished difference Result 714 states and 1790 transitions. [2021-10-06 21:23:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:23:04,855 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:04,862 INFO L225 Difference]: With dead ends: 714 [2021-10-06 21:23:04,862 INFO L226 Difference]: Without dead ends: 700 [2021-10-06 21:23:04,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 721.8ms TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:23:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-06 21:23:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 662. [2021-10-06 21:23:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 2.562783661119516) internal successors, (1694), 661 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1694 transitions. [2021-10-06 21:23:04,898 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1694 transitions. Word has length 29 [2021-10-06 21:23:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:04,898 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1694 transitions. [2021-10-06 21:23:04,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1694 transitions. [2021-10-06 21:23:04,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:04,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:04,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:04,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:05,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:05,114 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)] === [2021-10-06 21:23:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2090353421, now seen corresponding path program 4 times [2021-10-06 21:23:05,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:05,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310080172] [2021-10-06 21:23:05,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:05,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:05,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:05,119 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:05,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:23:05,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:05,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:05,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:23:05,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:05,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:05,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:05,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310080172] [2021-10-06 21:23:05,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310080172] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:05,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:05,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:23:05,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455120685] [2021-10-06 21:23:05,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:23:05,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:23:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:23:05,609 INFO L87 Difference]: Start difference. First operand 662 states and 1694 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2021-10-06 21:23:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:05,636 INFO L93 Difference]: Finished difference Result 843 states and 2123 transitions. [2021-10-06 21:23:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:23:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 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 29 [2021-10-06 21:23:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:05,641 INFO L225 Difference]: With dead ends: 843 [2021-10-06 21:23:05,641 INFO L226 Difference]: Without dead ends: 470 [2021-10-06 21:23:05,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:23:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-06 21:23:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2021-10-06 21:23:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 2.40997830802603) internal successors, (1111), 461 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1111 transitions. [2021-10-06 21:23:05,677 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1111 transitions. Word has length 29 [2021-10-06 21:23:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:05,677 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 1111 transitions. [2021-10-06 21:23:05,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2021-10-06 21:23:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1111 transitions. [2021-10-06 21:23:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:05,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:05,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:05,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:05,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:05,884 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)] === [2021-10-06 21:23:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:05,885 INFO L82 PathProgramCache]: Analyzing trace with hash -900952521, now seen corresponding path program 5 times [2021-10-06 21:23:05,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:05,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779115709] [2021-10-06 21:23:05,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:05,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:05,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:05,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:05,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:23:06,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:06,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:06,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:06,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:06,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:06,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:06,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779115709] [2021-10-06 21:23:06,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779115709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:06,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:06,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:06,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206963653] [2021-10-06 21:23:06,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:06,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:06,578 INFO L87 Difference]: Start difference. First operand 462 states and 1111 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:08,417 INFO L93 Difference]: Finished difference Result 618 states and 1439 transitions. [2021-10-06 21:23:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:23:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:08,423 INFO L225 Difference]: With dead ends: 618 [2021-10-06 21:23:08,423 INFO L226 Difference]: Without dead ends: 604 [2021-10-06 21:23:08,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1038.9ms TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:23:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-06 21:23:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 464. [2021-10-06 21:23:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 2.3974082073434126) internal successors, (1110), 463 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1110 transitions. [2021-10-06 21:23:08,440 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1110 transitions. Word has length 29 [2021-10-06 21:23:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:08,441 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1110 transitions. [2021-10-06 21:23:08,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1110 transitions. [2021-10-06 21:23:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:08,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:08,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:08,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:08,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:08,658 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)] === [2021-10-06 21:23:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1327260137, now seen corresponding path program 6 times [2021-10-06 21:23:08,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:08,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770766451] [2021-10-06 21:23:08,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:08,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:08,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:08,662 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:08,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:23:08,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:23:08,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:08,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:08,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:09,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:09,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:09,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770766451] [2021-10-06 21:23:09,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770766451] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:09,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:09,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:09,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869271519] [2021-10-06 21:23:09,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:09,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:09,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:09,423 INFO L87 Difference]: Start difference. First operand 464 states and 1110 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:11,114 INFO L93 Difference]: Finished difference Result 644 states and 1473 transitions. [2021-10-06 21:23:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:23:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:11,118 INFO L225 Difference]: With dead ends: 644 [2021-10-06 21:23:11,119 INFO L226 Difference]: Without dead ends: 616 [2021-10-06 21:23:11,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1135.4ms TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:23:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-06 21:23:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 448. [2021-10-06 21:23:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 2.3982102908277403) internal successors, (1072), 447 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1072 transitions. [2021-10-06 21:23:11,136 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1072 transitions. Word has length 29 [2021-10-06 21:23:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:11,136 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1072 transitions. [2021-10-06 21:23:11,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1072 transitions. [2021-10-06 21:23:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:11,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:11,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:11,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:11,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:11,352 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)] === [2021-10-06 21:23:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash 429371173, now seen corresponding path program 7 times [2021-10-06 21:23:11,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:11,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276852722] [2021-10-06 21:23:11,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:23:11,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:11,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:11,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:23:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:11,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:11,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:11,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:12,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:12,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276852722] [2021-10-06 21:23:12,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276852722] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:12,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:12,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:12,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445875461] [2021-10-06 21:23:12,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:12,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:12,033 INFO L87 Difference]: Start difference. First operand 448 states and 1072 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:12,896 INFO L93 Difference]: Finished difference Result 588 states and 1344 transitions. [2021-10-06 21:23:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:23:12,897 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 29 [2021-10-06 21:23:12,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:12,901 INFO L225 Difference]: With dead ends: 588 [2021-10-06 21:23:12,902 INFO L226 Difference]: Without dead ends: 532 [2021-10-06 21:23:12,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 595.4ms TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:23:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-06 21:23:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 476. [2021-10-06 21:23:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 2.3557894736842107) internal successors, (1119), 475 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1119 transitions. [2021-10-06 21:23:12,918 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1119 transitions. Word has length 29 [2021-10-06 21:23:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:12,918 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1119 transitions. [2021-10-06 21:23:12,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1119 transitions. [2021-10-06 21:23:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:12,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:12,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:12,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:13,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:13,134 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)] === [2021-10-06 21:23:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash -132836425, now seen corresponding path program 8 times [2021-10-06 21:23:13,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:13,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707531098] [2021-10-06 21:23:13,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:13,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:13,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:13,139 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:13,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:23:13,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:13,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:13,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:13,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:13,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707531098] [2021-10-06 21:23:13,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707531098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:13,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:13,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:13,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157028642] [2021-10-06 21:23:13,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:13,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:13,828 INFO L87 Difference]: Start difference. First operand 476 states and 1119 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:15,488 INFO L93 Difference]: Finished difference Result 712 states and 1595 transitions. [2021-10-06 21:23:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:23:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 29 [2021-10-06 21:23:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:15,498 INFO L225 Difference]: With dead ends: 712 [2021-10-06 21:23:15,498 INFO L226 Difference]: Without dead ends: 668 [2021-10-06 21:23:15,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 932.9ms TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:23:15,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-06 21:23:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 486. [2021-10-06 21:23:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.3402061855670104) internal successors, (1135), 485 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1135 transitions. [2021-10-06 21:23:15,517 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1135 transitions. Word has length 29 [2021-10-06 21:23:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:15,518 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1135 transitions. [2021-10-06 21:23:15,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1135 transitions. [2021-10-06 21:23:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:15,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:15,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:15,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-06 21:23:15,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:15,733 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)] === [2021-10-06 21:23:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:15,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1885337129, now seen corresponding path program 9 times [2021-10-06 21:23:15,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:15,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954396715] [2021-10-06 21:23:15,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:15,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:15,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:15,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:15,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:23:15,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:15,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:15,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:15,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:16,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:16,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:16,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954396715] [2021-10-06 21:23:16,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954396715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:16,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:16,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:16,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984047379] [2021-10-06 21:23:16,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:16,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:16,534 INFO L87 Difference]: Start difference. First operand 486 states and 1135 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:18,222 INFO L93 Difference]: Finished difference Result 624 states and 1390 transitions. [2021-10-06 21:23:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:23:18,224 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:18,227 INFO L225 Difference]: With dead ends: 624 [2021-10-06 21:23:18,228 INFO L226 Difference]: Without dead ends: 528 [2021-10-06 21:23:18,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1059.2ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:23:18,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-06 21:23:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 446. [2021-10-06 21:23:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.298876404494382) internal successors, (1023), 445 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1023 transitions. [2021-10-06 21:23:18,242 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1023 transitions. Word has length 29 [2021-10-06 21:23:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:18,242 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1023 transitions. [2021-10-06 21:23:18,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1023 transitions. [2021-10-06 21:23:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:18,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:18,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:18,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:18,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:18,459 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)] === [2021-10-06 21:23:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:18,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1149518875, now seen corresponding path program 10 times [2021-10-06 21:23:18,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:18,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955545958] [2021-10-06 21:23:18,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:18,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:18,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:18,462 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:18,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:23:18,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:18,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:18,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:18,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:19,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:19,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955545958] [2021-10-06 21:23:19,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955545958] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:19,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:19,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:19,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380586815] [2021-10-06 21:23:19,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:19,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:19,220 INFO L87 Difference]: Start difference. First operand 446 states and 1023 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:21,199 INFO L93 Difference]: Finished difference Result 626 states and 1398 transitions. [2021-10-06 21:23:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:23:21,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:21,204 INFO L225 Difference]: With dead ends: 626 [2021-10-06 21:23:21,204 INFO L226 Difference]: Without dead ends: 616 [2021-10-06 21:23:21,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1123.4ms TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:23:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-06 21:23:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 446. [2021-10-06 21:23:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.2943820224719103) internal successors, (1021), 445 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1021 transitions. [2021-10-06 21:23:21,218 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1021 transitions. Word has length 29 [2021-10-06 21:23:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:21,218 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1021 transitions. [2021-10-06 21:23:21,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1021 transitions. [2021-10-06 21:23:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:21,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:21,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:21,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:21,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:21,433 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)] === [2021-10-06 21:23:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1078693783, now seen corresponding path program 11 times [2021-10-06 21:23:21,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:21,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333598018] [2021-10-06 21:23:21,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:21,435 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:21,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:21,437 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:21,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:23:21,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:21,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:21,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:21,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:21,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:22,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:22,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333598018] [2021-10-06 21:23:22,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333598018] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:22,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:22,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:22,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093450552] [2021-10-06 21:23:22,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:22,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:22,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:22,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:22,158 INFO L87 Difference]: Start difference. First operand 446 states and 1021 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:24,902 INFO L93 Difference]: Finished difference Result 624 states and 1374 transitions. [2021-10-06 21:23:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:23:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:24,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:24,907 INFO L225 Difference]: With dead ends: 624 [2021-10-06 21:23:24,907 INFO L226 Difference]: Without dead ends: 610 [2021-10-06 21:23:24,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1687.0ms TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:23:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-06 21:23:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 444. [2021-10-06 21:23:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 2.293453724604966) internal successors, (1016), 443 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1016 transitions. [2021-10-06 21:23:24,923 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1016 transitions. Word has length 29 [2021-10-06 21:23:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:24,923 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1016 transitions. [2021-10-06 21:23:24,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1016 transitions. [2021-10-06 21:23:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:24,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:24,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:24,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:25,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:25,138 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)] === [2021-10-06 21:23:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:25,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2113712965, now seen corresponding path program 12 times [2021-10-06 21:23:25,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:25,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889920930] [2021-10-06 21:23:25,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:25,141 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:25,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:25,142 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:25,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:23:25,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:23:25,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:25,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:25,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:25,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:25,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:25,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889920930] [2021-10-06 21:23:25,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889920930] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:25,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:25,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:25,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530747599] [2021-10-06 21:23:25,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:25,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:25,874 INFO L87 Difference]: Start difference. First operand 444 states and 1016 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:27,669 INFO L93 Difference]: Finished difference Result 590 states and 1320 transitions. [2021-10-06 21:23:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:23:27,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 29 [2021-10-06 21:23:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:27,674 INFO L225 Difference]: With dead ends: 590 [2021-10-06 21:23:27,674 INFO L226 Difference]: Without dead ends: 576 [2021-10-06 21:23:27,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 873.0ms TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:23:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-06 21:23:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 442. [2021-10-06 21:23:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.292517006802721) internal successors, (1011), 441 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1011 transitions. [2021-10-06 21:23:27,687 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1011 transitions. Word has length 29 [2021-10-06 21:23:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:27,688 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1011 transitions. [2021-10-06 21:23:27,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1011 transitions. [2021-10-06 21:23:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:27,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:27,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:27,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:27,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:27,903 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)] === [2021-10-06 21:23:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:27,904 INFO L82 PathProgramCache]: Analyzing trace with hash -95539411, now seen corresponding path program 13 times [2021-10-06 21:23:27,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:27,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056546309] [2021-10-06 21:23:27,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:23:27,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:27,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:27,907 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:27,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:23:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:28,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:28,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:28,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:28,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:28,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056546309] [2021-10-06 21:23:28,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056546309] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:28,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:28,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:28,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200972718] [2021-10-06 21:23:28,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:28,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:28,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:28,643 INFO L87 Difference]: Start difference. First operand 442 states and 1011 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:31,081 INFO L93 Difference]: Finished difference Result 596 states and 1312 transitions. [2021-10-06 21:23:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:23:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:31,087 INFO L225 Difference]: With dead ends: 596 [2021-10-06 21:23:31,087 INFO L226 Difference]: Without dead ends: 568 [2021-10-06 21:23:31,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1240.9ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:23:31,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-06 21:23:31,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 438. [2021-10-06 21:23:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.288329519450801) internal successors, (1000), 437 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1000 transitions. [2021-10-06 21:23:31,104 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1000 transitions. Word has length 29 [2021-10-06 21:23:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:31,104 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1000 transitions. [2021-10-06 21:23:31,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1000 transitions. [2021-10-06 21:23:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:31,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:31,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:31,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:31,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:31,319 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)] === [2021-10-06 21:23:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash -339888309, now seen corresponding path program 14 times [2021-10-06 21:23:31,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:31,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356558593] [2021-10-06 21:23:31,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:31,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:31,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:31,324 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:31,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:23:31,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:31,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:31,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:31,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:31,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:32,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:32,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356558593] [2021-10-06 21:23:32,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356558593] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:32,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:32,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:32,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433162625] [2021-10-06 21:23:32,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:32,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:32,098 INFO L87 Difference]: Start difference. First operand 438 states and 1000 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:34,390 INFO L93 Difference]: Finished difference Result 532 states and 1182 transitions. [2021-10-06 21:23:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:23:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:34,395 INFO L225 Difference]: With dead ends: 532 [2021-10-06 21:23:34,395 INFO L226 Difference]: Without dead ends: 520 [2021-10-06 21:23:34,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1434.2ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:23:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-06 21:23:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 434. [2021-10-06 21:23:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.2863741339491916) internal successors, (990), 433 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 990 transitions. [2021-10-06 21:23:34,407 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 990 transitions. Word has length 29 [2021-10-06 21:23:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:34,407 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 990 transitions. [2021-10-06 21:23:34,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 990 transitions. [2021-10-06 21:23:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:34,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:34,409 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:34,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:34,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:34,622 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)] === [2021-10-06 21:23:34,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:34,623 INFO L82 PathProgramCache]: Analyzing trace with hash -549927413, now seen corresponding path program 15 times [2021-10-06 21:23:34,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:34,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272479300] [2021-10-06 21:23:34,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:34,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:34,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:34,625 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:34,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:23:34,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:34,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:34,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:34,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:35,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:35,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:35,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272479300] [2021-10-06 21:23:35,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272479300] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:35,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:35,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:35,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124664765] [2021-10-06 21:23:35,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:35,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:35,502 INFO L87 Difference]: Start difference. First operand 434 states and 990 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:37,916 INFO L93 Difference]: Finished difference Result 508 states and 1128 transitions. [2021-10-06 21:23:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:23:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:37,919 INFO L225 Difference]: With dead ends: 508 [2021-10-06 21:23:37,919 INFO L226 Difference]: Without dead ends: 464 [2021-10-06 21:23:37,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1497.8ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:23:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-06 21:23:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 402. [2021-10-06 21:23:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.314214463840399) internal successors, (928), 401 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 928 transitions. [2021-10-06 21:23:37,930 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 928 transitions. Word has length 29 [2021-10-06 21:23:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:37,930 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 928 transitions. [2021-10-06 21:23:37,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 928 transitions. [2021-10-06 21:23:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:37,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:37,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:37,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:38,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:38,144 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)] === [2021-10-06 21:23:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1001803671, now seen corresponding path program 16 times [2021-10-06 21:23:38,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:38,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954121678] [2021-10-06 21:23:38,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:38,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:38,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:38,148 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:38,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:23:38,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:38,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:38,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:23:38,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:38,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:38,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:38,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954121678] [2021-10-06 21:23:38,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954121678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:38,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:38,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:23:38,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106289260] [2021-10-06 21:23:38,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:23:38,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:23:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:23:38,662 INFO L87 Difference]: Start difference. First operand 402 states and 928 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2021-10-06 21:23:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:38,901 INFO L93 Difference]: Finished difference Result 154 states and 310 transitions. [2021-10-06 21:23:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:23:38,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 29 [2021-10-06 21:23:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:38,902 INFO L225 Difference]: With dead ends: 154 [2021-10-06 21:23:38,902 INFO L226 Difference]: Without dead ends: 106 [2021-10-06 21:23:38,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 154.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:23:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-06 21:23:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2021-10-06 21:23:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 97 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 197 transitions. [2021-10-06 21:23:38,906 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 197 transitions. Word has length 29 [2021-10-06 21:23:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:38,906 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 197 transitions. [2021-10-06 21:23:38,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2021-10-06 21:23:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 197 transitions. [2021-10-06 21:23:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:38,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:38,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:38,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:39,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:39,115 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)] === [2021-10-06 21:23:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash 285860305, now seen corresponding path program 17 times [2021-10-06 21:23:39,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:39,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865837870] [2021-10-06 21:23:39,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:39,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:39,118 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:39,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:23:39,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:39,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:39,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:39,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:39,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:39,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865837870] [2021-10-06 21:23:39,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865837870] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:39,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:39,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:39,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481683513] [2021-10-06 21:23:39,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:39,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:39,859 INFO L87 Difference]: Start difference. First operand 98 states and 197 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:40,440 INFO L93 Difference]: Finished difference Result 116 states and 224 transitions. [2021-10-06 21:23:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:23:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 29 [2021-10-06 21:23:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:40,442 INFO L225 Difference]: With dead ends: 116 [2021-10-06 21:23:40,442 INFO L226 Difference]: Without dead ends: 100 [2021-10-06 21:23:40,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 516.9ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:40,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-06 21:23:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-10-06 21:23:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.9690721649484537) internal successors, (191), 97 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 191 transitions. [2021-10-06 21:23:40,444 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 191 transitions. Word has length 29 [2021-10-06 21:23:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:40,445 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 191 transitions. [2021-10-06 21:23:40,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 191 transitions. [2021-10-06 21:23:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:40,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:40,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:40,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:40,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:40,647 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)] === [2021-10-06 21:23:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:40,647 INFO L82 PathProgramCache]: Analyzing trace with hash 645611095, now seen corresponding path program 18 times [2021-10-06 21:23:40,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:40,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119677624] [2021-10-06 21:23:40,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:40,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:40,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:40,651 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:40,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:23:40,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:23:40,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:40,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:40,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:41,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:41,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:41,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119677624] [2021-10-06 21:23:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119677624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:41,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:41,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:41,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919846242] [2021-10-06 21:23:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:41,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:41,419 INFO L87 Difference]: Start difference. First operand 98 states and 191 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:42,520 INFO L93 Difference]: Finished difference Result 170 states and 341 transitions. [2021-10-06 21:23:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:23:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:42,522 INFO L225 Difference]: With dead ends: 170 [2021-10-06 21:23:42,522 INFO L226 Difference]: Without dead ends: 158 [2021-10-06 21:23:42,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 875.0ms TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:23:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-06 21:23:42,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2021-10-06 21:23:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.9595959595959596) internal successors, (194), 99 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 194 transitions. [2021-10-06 21:23:42,526 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 194 transitions. Word has length 29 [2021-10-06 21:23:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:42,527 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 194 transitions. [2021-10-06 21:23:42,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 194 transitions. [2021-10-06 21:23:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:42,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:42,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:42,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:42,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:42,732 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)] === [2021-10-06 21:23:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash 665225875, now seen corresponding path program 19 times [2021-10-06 21:23:42,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:42,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235660822] [2021-10-06 21:23:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:23:42,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:42,735 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:23:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:43,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:43,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:43,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:43,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:43,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235660822] [2021-10-06 21:23:43,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235660822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:43,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:43,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858916059] [2021-10-06 21:23:43,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:43,500 INFO L87 Difference]: Start difference. First operand 100 states and 194 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:44,605 INFO L93 Difference]: Finished difference Result 168 states and 334 transitions. [2021-10-06 21:23:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:23:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 29 [2021-10-06 21:23:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:44,607 INFO L225 Difference]: With dead ends: 168 [2021-10-06 21:23:44,607 INFO L226 Difference]: Without dead ends: 150 [2021-10-06 21:23:44,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 734.5ms TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:23:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-06 21:23:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 92. [2021-10-06 21:23:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.934065934065934) internal successors, (176), 91 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 176 transitions. [2021-10-06 21:23:44,610 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 176 transitions. Word has length 29 [2021-10-06 21:23:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:44,610 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 176 transitions. [2021-10-06 21:23:44,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 176 transitions. [2021-10-06 21:23:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:44,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:44,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:44,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:44,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:44,811 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)] === [2021-10-06 21:23:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash 193342965, now seen corresponding path program 20 times [2021-10-06 21:23:44,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:44,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806871116] [2021-10-06 21:23:44,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:44,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:44,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:44,814 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:23:45,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:45,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:45,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:45,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:45,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:45,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:45,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806871116] [2021-10-06 21:23:45,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806871116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:45,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:45,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:23:45,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13473274] [2021-10-06 21:23:45,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:23:45,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:45,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:23:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:23:45,529 INFO L87 Difference]: Start difference. First operand 92 states and 176 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:45,957 INFO L93 Difference]: Finished difference Result 102 states and 189 transitions. [2021-10-06 21:23:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:23:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-06 21:23:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:45,959 INFO L225 Difference]: With dead ends: 102 [2021-10-06 21:23:45,959 INFO L226 Difference]: Without dead ends: 88 [2021-10-06 21:23:45,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 444.8ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:23:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-06 21:23:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-10-06 21:23:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.8941176470588235) internal successors, (161), 85 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 161 transitions. [2021-10-06 21:23:45,962 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 161 transitions. Word has length 29 [2021-10-06 21:23:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:45,962 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 161 transitions. [2021-10-06 21:23:45,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 161 transitions. [2021-10-06 21:23:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:45,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:45,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:45,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:46,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:46,176 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)] === [2021-10-06 21:23:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1717041047, now seen corresponding path program 21 times [2021-10-06 21:23:46,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:46,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478310202] [2021-10-06 21:23:46,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:46,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:46,180 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:46,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:23:46,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:46,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:46,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:46,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:46,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:46,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:46,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478310202] [2021-10-06 21:23:46,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478310202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:46,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:46,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:23:46,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658141615] [2021-10-06 21:23:46,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:23:46,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:23:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:23:46,910 INFO L87 Difference]: Start difference. First operand 86 states and 161 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:47,794 INFO L93 Difference]: Finished difference Result 126 states and 241 transitions. [2021-10-06 21:23:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:23:47,795 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-06 21:23:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:47,796 INFO L225 Difference]: With dead ends: 126 [2021-10-06 21:23:47,796 INFO L226 Difference]: Without dead ends: 114 [2021-10-06 21:23:47,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 754.6ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:23:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-06 21:23:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2021-10-06 21:23:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.8850574712643677) internal successors, (164), 87 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 164 transitions. [2021-10-06 21:23:47,798 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 164 transitions. Word has length 29 [2021-10-06 21:23:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:47,798 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 164 transitions. [2021-10-06 21:23:47,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 164 transitions. [2021-10-06 21:23:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:47,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:47,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:47,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:48,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:48,000 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)] === [2021-10-06 21:23:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -527220333, now seen corresponding path program 22 times [2021-10-06 21:23:48,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:48,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671891639] [2021-10-06 21:23:48,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:48,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:48,003 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:48,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:23:48,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:48,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:48,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:48,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:48,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:48,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:48,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671891639] [2021-10-06 21:23:48,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671891639] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:48,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:48,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:23:48,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698834603] [2021-10-06 21:23:48,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:23:48,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:23:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:23:48,723 INFO L87 Difference]: Start difference. First operand 88 states and 164 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:49,108 INFO L93 Difference]: Finished difference Result 96 states and 174 transitions. [2021-10-06 21:23:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:23:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-06 21:23:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:49,109 INFO L225 Difference]: With dead ends: 96 [2021-10-06 21:23:49,109 INFO L226 Difference]: Without dead ends: 80 [2021-10-06 21:23:49,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 445.5ms TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:23:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-06 21:23:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-06 21:23:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8481012658227849) internal successors, (146), 79 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 146 transitions. [2021-10-06 21:23:49,112 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 146 transitions. Word has length 29 [2021-10-06 21:23:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:49,113 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 146 transitions. [2021-10-06 21:23:49,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 146 transitions. [2021-10-06 21:23:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:49,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:49,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:49,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:49,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:49,318 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)] === [2021-10-06 21:23:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash 393387265, now seen corresponding path program 23 times [2021-10-06 21:23:49,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:49,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103259886] [2021-10-06 21:23:49,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:49,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:49,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:49,321 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:49,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:23:49,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:49,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:49,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:49,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:49,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:50,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:50,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103259886] [2021-10-06 21:23:50,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103259886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:50,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:50,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:50,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972783482] [2021-10-06 21:23:50,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:50,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:50,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:50,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:50,156 INFO L87 Difference]: Start difference. First operand 80 states and 146 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:51,869 INFO L93 Difference]: Finished difference Result 146 states and 283 transitions. [2021-10-06 21:23:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:23:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:51,870 INFO L225 Difference]: With dead ends: 146 [2021-10-06 21:23:51,870 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 21:23:51,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1277.0ms TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:23:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 21:23:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 80. [2021-10-06 21:23:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8227848101265822) internal successors, (144), 79 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 144 transitions. [2021-10-06 21:23:51,873 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 144 transitions. Word has length 29 [2021-10-06 21:23:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:51,873 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 144 transitions. [2021-10-06 21:23:51,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 144 transitions. [2021-10-06 21:23:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:51,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:51,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:51,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:52,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:52,088 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)] === [2021-10-06 21:23:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:52,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1637703871, now seen corresponding path program 24 times [2021-10-06 21:23:52,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:52,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002423206] [2021-10-06 21:23:52,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:52,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:52,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:52,091 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:52,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:23:52,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:23:52,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:52,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:52,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:52,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:52,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:52,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002423206] [2021-10-06 21:23:52,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002423206] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:52,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:52,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:23:52,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426045753] [2021-10-06 21:23:52,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:23:52,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:23:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:23:52,875 INFO L87 Difference]: Start difference. First operand 80 states and 144 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:54,544 INFO L93 Difference]: Finished difference Result 116 states and 216 transitions. [2021-10-06 21:23:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:23:54,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-06 21:23:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:54,546 INFO L225 Difference]: With dead ends: 116 [2021-10-06 21:23:54,546 INFO L226 Difference]: Without dead ends: 102 [2021-10-06 21:23:54,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1081.6ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-06 21:23:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2021-10-06 21:23:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.8051948051948052) internal successors, (139), 77 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 139 transitions. [2021-10-06 21:23:54,549 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 139 transitions. Word has length 29 [2021-10-06 21:23:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:54,549 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 139 transitions. [2021-10-06 21:23:54,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:54,550 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 139 transitions. [2021-10-06 21:23:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:54,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:54,550 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:54,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:54,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:54,751 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)] === [2021-10-06 21:23:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash -217014663, now seen corresponding path program 25 times [2021-10-06 21:23:54,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:54,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391805443] [2021-10-06 21:23:54,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:23:54,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:54,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:54,755 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:54,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:23:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:55,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:55,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:55,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:55,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:55,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391805443] [2021-10-06 21:23:55,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391805443] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:55,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:55,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:55,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623701289] [2021-10-06 21:23:55,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:55,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:55,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:55,539 INFO L87 Difference]: Start difference. First operand 78 states and 139 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:56,406 INFO L93 Difference]: Finished difference Result 86 states and 151 transitions. [2021-10-06 21:23:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:23:56,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 29 [2021-10-06 21:23:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:56,408 INFO L225 Difference]: With dead ends: 86 [2021-10-06 21:23:56,408 INFO L226 Difference]: Without dead ends: 74 [2021-10-06 21:23:56,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 706.0ms TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:23:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-06 21:23:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-06 21:23:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.7671232876712328) internal successors, (129), 73 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 129 transitions. [2021-10-06 21:23:56,411 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 129 transitions. Word has length 29 [2021-10-06 21:23:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:56,412 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 129 transitions. [2021-10-06 21:23:56,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-06 21:23:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 129 transitions. [2021-10-06 21:23:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:56,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:56,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:56,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:56,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:56,615 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)] === [2021-10-06 21:23:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:56,615 INFO L82 PathProgramCache]: Analyzing trace with hash -197399883, now seen corresponding path program 26 times [2021-10-06 21:23:56,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:56,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287877726] [2021-10-06 21:23:56,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:56,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:56,618 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:56,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:23:56,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:56,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:56,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:56,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:57,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:57,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:57,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287877726] [2021-10-06 21:23:57,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287877726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:57,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:57,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:57,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309814188] [2021-10-06 21:23:57,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:57,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:57,393 INFO L87 Difference]: Start difference. First operand 74 states and 129 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:58,280 INFO L93 Difference]: Finished difference Result 108 states and 196 transitions. [2021-10-06 21:23:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:23:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 29 [2021-10-06 21:23:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:58,281 INFO L225 Difference]: With dead ends: 108 [2021-10-06 21:23:58,281 INFO L226 Difference]: Without dead ends: 96 [2021-10-06 21:23:58,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 624.8ms TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:23:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-06 21:23:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2021-10-06 21:23:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 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) [2021-10-06 21:23:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2021-10-06 21:23:58,284 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 29 [2021-10-06 21:23:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:58,284 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2021-10-06 21:23:58,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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) [2021-10-06 21:23:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2021-10-06 21:23:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:58,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:58,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:58,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:58,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:58,486 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)] === [2021-10-06 21:23:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:58,487 INFO L82 PathProgramCache]: Analyzing trace with hash 592471829, now seen corresponding path program 27 times [2021-10-06 21:23:58,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:58,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642034964] [2021-10-06 21:23:58,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:58,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:58,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:58,490 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:58,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:23:58,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:58,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:58,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:58,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:58,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:59,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:59,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642034964] [2021-10-06 21:23:59,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642034964] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:59,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:59,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:23:59,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831648274] [2021-10-06 21:23:59,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:23:59,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:59,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:23:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:23:59,290 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:59,973 INFO L93 Difference]: Finished difference Result 78 states and 131 transitions. [2021-10-06 21:23:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:23:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-06 21:23:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:59,974 INFO L225 Difference]: With dead ends: 78 [2021-10-06 21:23:59,974 INFO L226 Difference]: Without dead ends: 66 [2021-10-06 21:23:59,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 567.0ms TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:23:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-06 21:23:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-06 21:23:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.676923076923077) internal successors, (109), 65 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 109 transitions. [2021-10-06 21:23:59,976 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 109 transitions. Word has length 29 [2021-10-06 21:23:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:59,976 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 109 transitions. [2021-10-06 21:23:59,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:23:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 109 transitions. [2021-10-06 21:23:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:23:59,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:59,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:59,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:00,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:00,178 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)] === [2021-10-06 21:24:00,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:00,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1651789551, now seen corresponding path program 28 times [2021-10-06 21:24:00,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:00,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833315944] [2021-10-06 21:24:00,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:24:00,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:00,181 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:00,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:24:00,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:24:00,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:00,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:24:00,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:00,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:00,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:00,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833315944] [2021-10-06 21:24:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833315944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:00,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:24:00,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667500988] [2021-10-06 21:24:00,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:24:00,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:24:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:24:00,932 INFO L87 Difference]: Start difference. First operand 66 states and 109 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:24:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:01,180 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2021-10-06 21:24:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:24:01,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-06 21:24:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:01,182 INFO L225 Difference]: With dead ends: 26 [2021-10-06 21:24:01,182 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:24:01,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 348.9ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:24:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:24:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:24:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:24:01,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-10-06 21:24:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:01,183 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:24:01,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2021-10-06 21:24:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:24:01,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:24:01,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:24:01,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:24:01,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:24:01,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:24:01,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:24:01,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:24:01,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:24:01,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:24:01,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:24:01,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:24:01,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:24:01,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:24:01,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:24:01,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:24:01,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:24:01,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:24:01,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:24:01,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:01,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:01,400 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:24:01,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:24:01,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:24:01 BasicIcfg [2021-10-06 21:24:01,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:24:01,404 INFO L168 Benchmark]: Toolchain (without parser) took 79914.53 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 125.6 MB in the beginning and 66.3 MB in the end (delta: 59.3 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:01,404 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:24:01,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:01,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.33 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 112.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:01,407 INFO L168 Benchmark]: Boogie Preprocessor took 64.48 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 111.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:01,408 INFO L168 Benchmark]: RCFGBuilder took 802.53 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 125.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:01,408 INFO L168 Benchmark]: TraceAbstraction took 78480.49 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 125.0 MB in the beginning and 66.3 MB in the end (delta: 58.7 MB). Peak memory consumption was 100.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:01,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 461.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 86.33 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 112.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.48 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 111.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 802.53 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 125.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 78480.49 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 125.0 MB in the beginning and 66.3 MB in the end (delta: 58.7 MB). Peak memory consumption was 100.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12106.9ms, 144 PlacesBefore, 56 PlacesAfterwards, 139 TransitionsBefore, 48 TransitionsAfterwards, 2512 CoEnabledTransitionPairs, 8 FixpointIterations, 67 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 135 TotalNumberOfCompositions, 8224 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4009, positive: 3791, positive conditional: 0, positive unconditional: 3791, negative: 218, negative conditional: 0, negative unconditional: 218, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1773, positive: 1725, positive conditional: 0, positive unconditional: 1725, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1773, positive: 1698, positive conditional: 0, positive unconditional: 1698, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 281, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 244, negative conditional: 0, negative unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4009, positive: 2066, positive conditional: 0, positive unconditional: 2066, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 1773, unknown conditional: 0, unknown unconditional: 1773] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 215, Positive conditional cache size: 0, Positive unconditional cache size: 215, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 99]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 99]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 104]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 178 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 78270.5ms, OverallIterations: 35, TraceHistogramMax: 1, EmptinessCheckTime: 66.4ms, AutomataDifference: 35299.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12239.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1517 SDtfs, 3966 SDslu, 8947 SDs, 0 SdLazy, 7966 SolverSat, 809 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16957.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1853 GetRequests, 1272 SyntacticMatches, 2 SemanticMatches, 579 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 22751.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1379occurred in iteration=0, InterpolantAutomatonStates: 445, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 816.5ms AutomataMinimizationTime, 35 MinimizatonAttempts, 1758 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 342.7ms SsaConstructionTime, 1514.7ms SatisfiabilityAnalysisTime, 15610.3ms InterpolantComputationTime, 843 NumberOfCodeBlocks, 843 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1616 ConstructedInterpolants, 8 QuantifiedInterpolants, 7425 SizeOfPredicates, 268 NumberOfNonLiveVariables, 3267 ConjunctsInSsa, 316 ConjunctsInUnsatCore, 70 InterpolantComputations, 70 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:24:01,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...