/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/chl/match-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:01:13,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:01:13,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:01:13,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:01:13,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:01:13,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:01:13,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:01:13,858 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 21:01:13,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:01:13,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:01:13,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:01:13,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:01:13,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:01:13,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:01:13,889 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:01:13,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:01:13,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:01:13,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:01:13,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:01:13,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:01:13,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:01:13,891 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:01:13,891 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:01:13,891 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:01:13,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:01:13,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:01:13,892 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:01:13,892 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:01:13,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:01:13,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:01:13,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:01:13,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:01:13,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:01:13,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:13,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:01:13,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:01:13,894 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:01:13,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:01:13,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:01:13,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:01:13,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:01:14,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:01:14,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:01:14,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:01:14,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:01:14,298 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:01:14,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/match-trans.wvr.c [2021-10-06 21:01:14,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00d42bf4c/3370d6dea0c34e479b1b0643576a00cb/FLAG79597700c [2021-10-06 21:01:15,084 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:01:15,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/match-trans.wvr.c [2021-10-06 21:01:15,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00d42bf4c/3370d6dea0c34e479b1b0643576a00cb/FLAG79597700c [2021-10-06 21:01:15,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00d42bf4c/3370d6dea0c34e479b1b0643576a00cb [2021-10-06 21:01:15,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:01:15,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:01:15,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:15,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:01:15,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:01:15,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713d784b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15, skipping insertion in model container [2021-10-06 21:01:15,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:01:15,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:15,738 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/chl/match-trans.wvr.c[2915,2928] [2021-10-06 21:01:15,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:15,759 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:01:15,789 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/chl/match-trans.wvr.c[2915,2928] [2021-10-06 21:01:15,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:15,811 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:01:15,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15 WrapperNode [2021-10-06 21:01:15,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:15,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:15,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:01:15,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:01:15,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:15,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:01:15,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:01:15,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:01:15,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:01:15,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:01:15,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:01:15,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:01:15,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (1/1) ... [2021-10-06 21:01:15,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:15,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:01:15,942 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 21:01:15,969 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 21:01:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:01:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:01:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:01:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:01:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:01:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:01:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:01:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:01:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:01:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:01:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:01:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:01:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:01:16,025 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 21:01:16,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:01:16,600 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-06 21:01:16,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:16 BoogieIcfgContainer [2021-10-06 21:01:16,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:01:16,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:01:16,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:01:16,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:01:16,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:01:15" (1/3) ... [2021-10-06 21:01:16,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dabeba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:16, skipping insertion in model container [2021-10-06 21:01:16,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:15" (2/3) ... [2021-10-06 21:01:16,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dabeba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:16, skipping insertion in model container [2021-10-06 21:01:16,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:16" (3/3) ... [2021-10-06 21:01:16,649 INFO L111 eAbstractionObserver]: Analyzing ICFG match-trans.wvr.c [2021-10-06 21:01:16,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:01:16,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:01:16,655 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:01:16,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,712 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,712 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,712 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,717 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,719 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,732 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,732 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,732 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,733 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,733 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,736 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,736 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,736 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,736 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,737 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:16,744 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:01:16,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:01:16,806 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 21:01:16,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:01:16,826 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:01:16,838 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 168 transitions, 360 flow [2021-10-06 21:01:16,842 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 168 transitions, 360 flow [2021-10-06 21:01:16,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 168 transitions, 360 flow [2021-10-06 21:01:16,915 INFO L129 PetriNetUnfolder]: 13/165 cut-off events. [2021-10-06 21:01:16,915 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:01:16,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 13/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 275 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2021-10-06 21:01:16,929 INFO L116 LiptonReduction]: Number of co-enabled transitions 5280 [2021-10-06 21:01:37,231 INFO L131 LiptonReduction]: Checked pairs total: 5996 [2021-10-06 21:01:37,231 INFO L133 LiptonReduction]: Total number of compositions: 213 [2021-10-06 21:01:37,246 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 33 transitions, 90 flow [2021-10-06 21:01:37,267 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:01:37,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:37,280 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:01:37,281 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 21:01:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash 700, now seen corresponding path program 1 times [2021-10-06 21:01:37,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:37,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833635396] [2021-10-06 21:01:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:37,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:37,310 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 21:01:37,318 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 21:01:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:37,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:01:37,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:37,399 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 21:01:37,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:37,400 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 21:01:37,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:37,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833635396] [2021-10-06 21:01:37,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833635396] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:37,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:37,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:01:37,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607956601] [2021-10-06 21:01:37,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:01:37,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:01:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:01:37,433 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 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 21:01:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:37,455 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2021-10-06 21:01:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:01:37,457 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 21:01:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:37,472 INFO L225 Difference]: With dead ends: 84 [2021-10-06 21:01:37,472 INFO L226 Difference]: Without dead ends: 84 [2021-10-06 21:01:37,473 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 21:01:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-06 21:01:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-06 21:01:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 83 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 21:01:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2021-10-06 21:01:37,535 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 1 [2021-10-06 21:01:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:37,535 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2021-10-06 21:01:37,535 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 21:01:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2021-10-06 21:01:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:01:37,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:37,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:01:37,552 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 21:01:37,748 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 21:01:37,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:01:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash 686317, now seen corresponding path program 1 times [2021-10-06 21:01:37,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:37,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916466507] [2021-10-06 21:01:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:37,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:37,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:37,755 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 21:01:37,784 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 21:01:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:37,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:01:37,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:38,167 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:01:38,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 127 treesize of output 162 [2021-10-06 21:01:41,273 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 21:01:41,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:41,289 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 21:01:41,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:41,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916466507] [2021-10-06 21:01:41,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916466507] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:41,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:41,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:41,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035561643] [2021-10-06 21:01:41,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:41,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:41,294 INFO L87 Difference]: Start difference. First operand 84 states and 164 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 21:01:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:41,370 INFO L93 Difference]: Finished difference Result 78 states and 153 transitions. [2021-10-06 21:01:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:41,371 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 21:01:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:41,373 INFO L225 Difference]: With dead ends: 78 [2021-10-06 21:01:41,373 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 21:01:41,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 21:01:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-06 21:01:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.217391304347826) internal successors, (153), 77 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 153 transitions. [2021-10-06 21:01:41,384 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 153 transitions. Word has length 3 [2021-10-06 21:01:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:41,384 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 153 transitions. [2021-10-06 21:01:41,385 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 21:01:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 153 transitions. [2021-10-06 21:01:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:01:41,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:41,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:01:41,400 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 21:01:41,596 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 21:01:41,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:01:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:41,598 INFO L82 PathProgramCache]: Analyzing trace with hash 686318, now seen corresponding path program 1 times [2021-10-06 21:01:41,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:41,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583640525] [2021-10-06 21:01:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:41,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:41,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:41,602 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 21:01:41,607 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 21:01:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:41,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:41,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:41,810 INFO L354 Elim1Store]: treesize reduction 147, result has 20.5 percent of original size [2021-10-06 21:01:41,811 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 43 treesize of output 67 [2021-10-06 21:01:41,817 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 94 treesize of output 92 [2021-10-06 21:01:42,013 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 21:01:42,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:42,058 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 21:01:42,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:42,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583640525] [2021-10-06 21:01:42,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583640525] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:42,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:42,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:42,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614297295] [2021-10-06 21:01:42,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:42,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:42,061 INFO L87 Difference]: Start difference. First operand 78 states and 153 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 21:01:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:42,106 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2021-10-06 21:01:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:42,107 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 21:01:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:42,108 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:01:42,108 INFO L226 Difference]: Without dead ends: 72 [2021-10-06 21:01:42,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-06 21:01:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-06 21:01:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2021-10-06 21:01:42,117 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 3 [2021-10-06 21:01:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:42,117 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2021-10-06 21:01:42,117 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 21:01:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2021-10-06 21:01:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:01:42,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:42,118 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:01:42,131 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 21:01:42,318 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 21:01:42,319 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 21:01:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash 659567252, now seen corresponding path program 1 times [2021-10-06 21:01:42,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:42,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098600347] [2021-10-06 21:01:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:42,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:42,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:42,324 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 21:01:42,327 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 21:01:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:01:42,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:42,523 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:01:42,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 21:01:42,933 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 21:01:42,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:42,948 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 21:01:42,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:42,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098600347] [2021-10-06 21:01:42,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098600347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:42,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:42,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:01:42,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793771858] [2021-10-06 21:01:42,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:01:42,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:01:42,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:42,951 INFO L87 Difference]: Start difference. First operand 72 states and 142 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 21:01:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:42,984 INFO L93 Difference]: Finished difference Result 66 states and 131 transitions. [2021-10-06 21:01:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:42,984 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 21:01:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:42,986 INFO L225 Difference]: With dead ends: 66 [2021-10-06 21:01:42,986 INFO L226 Difference]: Without dead ends: 66 [2021-10-06 21:01:42,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-06 21:01:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-06 21:01:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 2.1475409836065573) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2021-10-06 21:01:42,992 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 5 [2021-10-06 21:01:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2021-10-06 21:01:42,993 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 21:01:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2021-10-06 21:01:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:01:42,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:42,994 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:01:43,007 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 21:01:43,207 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 21:01:43,208 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 21:01:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:43,209 INFO L82 PathProgramCache]: Analyzing trace with hash 659567253, now seen corresponding path program 1 times [2021-10-06 21:01:43,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:43,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918155606] [2021-10-06 21:01:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:43,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:43,213 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 21:01:43,216 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 21:01:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:43,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:01:43,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:43,410 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:01:43,410 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 21:01:43,484 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 21:01:43,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:43,563 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 21:01:43,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:43,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918155606] [2021-10-06 21:01:43,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918155606] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:43,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:43,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:43,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194300037] [2021-10-06 21:01:43,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:43,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:43,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:43,566 INFO L87 Difference]: Start difference. First operand 66 states and 131 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 21:01:43,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:43,592 INFO L93 Difference]: Finished difference Result 60 states and 120 transitions. [2021-10-06 21:01:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:43,593 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 21:01:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:43,594 INFO L225 Difference]: With dead ends: 60 [2021-10-06 21:01:43,594 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 21:01:43,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 21:01:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-06 21:01:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 59 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2021-10-06 21:01:43,599 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 5 [2021-10-06 21:01:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:43,599 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2021-10-06 21:01:43,599 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 21:01:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2021-10-06 21:01:43,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:01:43,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:43,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:43,615 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 21:01:43,801 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 21:01:43,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:01:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1811014132, now seen corresponding path program 1 times [2021-10-06 21:01:43,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:43,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152210662] [2021-10-06 21:01:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:43,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:43,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:43,806 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 21:01:43,808 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 21:01:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:43,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:01:43,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:44,036 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:01:44,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 21:01:44,362 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 21:01:44,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:44,403 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 21:01:44,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:44,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152210662] [2021-10-06 21:01:44,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152210662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:44,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:44,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:01:44,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481851022] [2021-10-06 21:01:44,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:01:44,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:01:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:01:44,406 INFO L87 Difference]: Start difference. First operand 60 states and 120 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 21:01:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:44,438 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2021-10-06 21:01:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:44,439 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 21:01:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:44,440 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:01:44,440 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:01:44,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:01:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:01:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:01:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2021-10-06 21:01:44,444 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 7 [2021-10-06 21:01:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:44,445 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2021-10-06 21:01:44,445 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 21:01:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2021-10-06 21:01:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:01:44,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:44,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:44,458 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 21:01:44,646 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 21:01:44,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:01:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:44,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1811014131, now seen corresponding path program 1 times [2021-10-06 21:01:44,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:44,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820241058] [2021-10-06 21:01:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:44,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:44,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:44,653 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 21:01:44,657 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 21:01:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:44,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:44,850 INFO L354 Elim1Store]: treesize reduction 147, result has 20.5 percent of original size [2021-10-06 21:01:44,850 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 36 treesize of output 60 [2021-10-06 21:01:44,855 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 82 treesize of output 80 [2021-10-06 21:01:45,334 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 21:01:45,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:45,432 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 21:01:45,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:45,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820241058] [2021-10-06 21:01:45,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820241058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:45,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:45,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:45,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457563061] [2021-10-06 21:01:45,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:45,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:45,435 INFO L87 Difference]: Start difference. First operand 52 states and 100 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 21:01:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:45,459 INFO L93 Difference]: Finished difference Result 44 states and 80 transitions. [2021-10-06 21:01:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:45,460 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 21:01:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:45,461 INFO L225 Difference]: With dead ends: 44 [2021-10-06 21:01:45,461 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 21:01:45,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 21:01:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-06 21:01:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 80 transitions. [2021-10-06 21:01:45,465 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 80 transitions. Word has length 7 [2021-10-06 21:01:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:45,465 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 80 transitions. [2021-10-06 21:01:45,465 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 21:01:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 80 transitions. [2021-10-06 21:01:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:01:45,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:45,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:45,479 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 21:01:45,676 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 21:01:45,676 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 21:01:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1034278817, now seen corresponding path program 1 times [2021-10-06 21:01:45,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:45,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27943384] [2021-10-06 21:01:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:45,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:45,680 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 21:01:45,684 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 21:01:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:45,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:01:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:17,188 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 21:03:17,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:20,025 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 21:03:20,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:20,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27943384] [2021-10-06 21:03:20,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27943384] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:20,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:20,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:03:20,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329246083] [2021-10-06 21:03:20,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:03:20,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:03:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:03:20,029 INFO L87 Difference]: Start difference. First operand 44 states and 80 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:26,766 INFO L93 Difference]: Finished difference Result 65 states and 103 transitions. [2021-10-06 21:03:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:03:26,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:03:26,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:26,768 INFO L225 Difference]: With dead ends: 65 [2021-10-06 21:03:26,768 INFO L226 Difference]: Without dead ends: 54 [2021-10-06 21:03:26,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6175.6ms TimeCoverageRelationStatistics Valid=52, Invalid=103, Unknown=1, NotChecked=0, Total=156 [2021-10-06 21:03:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-06 21:03:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2021-10-06 21:03:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 76 transitions. [2021-10-06 21:03:26,772 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 76 transitions. Word has length 16 [2021-10-06 21:03:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:26,772 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 76 transitions. [2021-10-06 21:03:26,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 76 transitions. [2021-10-06 21:03:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:03:26,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:26,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:26,783 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 21:03:26,976 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 21:03:26,977 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 21:03:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash 336689329, now seen corresponding path program 2 times [2021-10-06 21:03:26,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:26,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926181204] [2021-10-06 21:03:26,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:26,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:26,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:26,982 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 21:03:26,984 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 21:03:27,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:03:27,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:27,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:03:27,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:02,815 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 21:05:02,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:06,990 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 21:05:06,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:06,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926181204] [2021-10-06 21:05:06,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926181204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:06,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:06,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:05:06,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014869543] [2021-10-06 21:05:06,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:05:06,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:05:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:05:06,993 INFO L87 Difference]: Start difference. First operand 44 states and 76 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:15,218 INFO L93 Difference]: Finished difference Result 69 states and 105 transitions. [2021-10-06 21:05:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:05:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:05:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:15,220 INFO L225 Difference]: With dead ends: 69 [2021-10-06 21:05:15,220 INFO L226 Difference]: Without dead ends: 46 [2021-10-06 21:05:15,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8587.9ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:05:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-06 21:05:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2021-10-06 21:05:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-06 21:05:15,225 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-06 21:05:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:15,225 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-06 21:05:15,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-06 21:05:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:05:15,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:15,226 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:15,238 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 21:05:15,431 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 21:05:15,432 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 21:05:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:15,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1817806795, now seen corresponding path program 3 times [2021-10-06 21:05:15,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:15,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891834516] [2021-10-06 21:05:15,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:15,435 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:15,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:15,436 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 21:05:15,437 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 21:05:15,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:05:15,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:15,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:05:15,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:48,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:50,842 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 21:06:50,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:50,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891834516] [2021-10-06 21:06:50,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891834516] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:50,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:50,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:06:50,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488093885] [2021-10-06 21:06:50,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:06:50,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:06:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:06:50,845 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:53,775 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-06 21:06:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:06:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:53,777 INFO L225 Difference]: With dead ends: 51 [2021-10-06 21:06:53,777 INFO L226 Difference]: Without dead ends: 40 [2021-10-06 21:06:53,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3571.1ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-06 21:06:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2021-10-06 21:06:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 48 transitions. [2021-10-06 21:06:53,779 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 48 transitions. Word has length 16 [2021-10-06 21:06:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:53,780 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 48 transitions. [2021-10-06 21:06:53,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2021-10-06 21:06:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:06:53,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:53,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:53,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-06 21:06:53,985 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 21:06:53,985 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 21:06:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:53,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1314230099, now seen corresponding path program 4 times [2021-10-06 21:06:53,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:53,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473074980] [2021-10-06 21:06:53,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:53,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:53,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:53,989 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 21:06:53,990 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 21:06:54,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:54,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:54,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:06:54,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:00,741 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 21:08:00,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:02,899 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 21:08:02,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:02,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473074980] [2021-10-06 21:08:02,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473074980] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:02,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:02,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:08:02,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327245032] [2021-10-06 21:08:02,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:08:02,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:08:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:08:02,903 INFO L87 Difference]: Start difference. First operand 32 states and 48 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:06,364 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2021-10-06 21:08:06,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:08:06,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:08:06,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:06,366 INFO L225 Difference]: With dead ends: 41 [2021-10-06 21:08:06,366 INFO L226 Difference]: Without dead ends: 30 [2021-10-06 21:08:06,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4233.5ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:08:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-06 21:08:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-06 21:08:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2021-10-06 21:08:06,369 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 16 [2021-10-06 21:08:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:06,369 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2021-10-06 21:08:06,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2021-10-06 21:08:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:08:06,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:06,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:06,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-06 21:08:06,574 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 21:08:06,575 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 21:08:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:06,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1026029219, now seen corresponding path program 5 times [2021-10-06 21:08:06,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:06,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804059317] [2021-10-06 21:08:06,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:08:06,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:06,579 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 21:08:06,588 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 21:08:06,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:08:06,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:06,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:08:06,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:00,490 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 21:10:00,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:02,750 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 21:10:02,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:02,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804059317] [2021-10-06 21:10:02,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804059317] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:02,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:02,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:10:02,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352414319] [2021-10-06 21:10:02,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:10:02,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:10:02,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:10:02,754 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:07,065 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-06 21:10:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:10:07,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:10:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:07,068 INFO L225 Difference]: With dead ends: 37 [2021-10-06 21:10:07,069 INFO L226 Difference]: Without dead ends: 22 [2021-10-06 21:10:07,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5735.9ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:10:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-06 21:10:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-06 21:10:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-06 21:10:07,071 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-06 21:10:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:07,071 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-06 21:10:07,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-06 21:10:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:10:07,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:07,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:07,099 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 21:10:07,280 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 21:10:07,281 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 21:10:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash 549482097, now seen corresponding path program 6 times [2021-10-06 21:10:07,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:07,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395536411] [2021-10-06 21:10:07,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:10:07,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:07,285 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 21:10:07,291 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 21:10:07,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:10:07,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:07,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:10:07,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:14,945 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 21:11:14,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:17,014 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 21:11:17,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:17,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395536411] [2021-10-06 21:11:17,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395536411] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:17,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:17,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:11:17,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998186633] [2021-10-06 21:11:17,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:11:17,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:11:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:17,017 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:22,661 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-06 21:11:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:11:22,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:11:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:22,662 INFO L225 Difference]: With dead ends: 21 [2021-10-06 21:11:22,662 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:11:22,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6434.5ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:11:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:11:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:11:22,664 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 21:11:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:11:22,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-06 21:11:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:22,664 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:11:22,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:11:22,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:11:22,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:11:22,668 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:11:22,668 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:11:22,668 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:11:22,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:11:22,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:11:22,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:11:22,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:11:22,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:11:22,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:11:22,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:11:22,684 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 21:11:22,883 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 21:11:22,891 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:11:22,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:11:22,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:11:22 BasicIcfg [2021-10-06 21:11:22,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:11:22,895 INFO L168 Benchmark]: Toolchain (without parser) took 607464.16 ms. Allocated memory was 163.6 MB in the beginning and 217.1 MB in the end (delta: 53.5 MB). Free memory was 138.4 MB in the beginning and 124.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:22,895 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:11:22,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.84 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 127.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:22,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.20 ms. Allocated memory is still 163.6 MB. Free memory was 126.9 MB in the beginning and 125.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:22,897 INFO L168 Benchmark]: Boogie Preprocessor took 34.26 ms. Allocated memory is still 163.6 MB. Free memory was 125.1 MB in the beginning and 123.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:22,897 INFO L168 Benchmark]: RCFGBuilder took 704.99 ms. Allocated memory is still 163.6 MB. Free memory was 123.7 MB in the beginning and 108.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:22,898 INFO L168 Benchmark]: TraceAbstraction took 606289.45 ms. Allocated memory was 163.6 MB in the beginning and 217.1 MB in the end (delta: 53.5 MB). Free memory was 108.0 MB in the beginning and 124.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 38.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:22,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 371.84 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 127.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.20 ms. Allocated memory is still 163.6 MB. Free memory was 126.9 MB in the beginning and 125.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.26 ms. Allocated memory is still 163.6 MB. Free memory was 125.1 MB in the beginning and 123.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 704.99 ms. Allocated memory is still 163.6 MB. Free memory was 123.7 MB in the beginning and 108.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 606289.45 ms. Allocated memory was 163.6 MB in the beginning and 217.1 MB in the end (delta: 53.5 MB). Free memory was 108.0 MB in the beginning and 124.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 38.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20389.4ms, 165 PlacesBefore, 43 PlacesAfterwards, 168 TransitionsBefore, 33 TransitionsAfterwards, 5280 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 42 ConcurrentYvCompositions, 13 ChoiceCompositions, 213 TotalNumberOfCompositions, 5996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5996, positive: 5996, positive conditional: 0, positive unconditional: 5996, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4354, positive: 4354, positive conditional: 0, positive unconditional: 4354, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4354, positive: 4354, positive conditional: 0, positive unconditional: 4354, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5996, positive: 1642, positive conditional: 0, positive unconditional: 1642, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4354, unknown conditional: 0, unknown unconditional: 4354] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 52]: 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, 216 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 606094.6ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 20.4ms, AutomataDifference: 31648.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20460.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 231 SDtfs, 460 SDslu, 279 SDs, 0 SdLazy, 172 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4239.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 34930.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 93.5ms AutomataMinimizationTime, 13 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 149.3ms SsaConstructionTime, 683.7ms SatisfiabilityAnalysisTime, 548894.7ms InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 228 ConstructedInterpolants, 46 QuantifiedInterpolants, 8939 SizeOfPredicates, 144 NumberOfNonLiveVariables, 745 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 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 21:11:23,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...