/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:14:35,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:14:35,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:14:35,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 20:14:35,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 20:14:35,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 20:14:35,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 20:14:35,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 20:14:35,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:14:35,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:14:35,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:14:35,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:14:35,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:14:35,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:14:35,663 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:14:35,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:14:35,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:14:35,665 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:14:35,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:14:35,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:14:35,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:14:35,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:14:35,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:14:35,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:14:35,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:14:35,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:14:35,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:14:36,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:14:36,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:14:36,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 20:14:36,004 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 20:14:36,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-05 20:14:36,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a9c69bd/09cc4af946484c9c98b9ffb3c3c83bc1/FLAG29ae3cc0d [2021-06-05 20:14:36,581 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 20:14:36,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-05 20:14:36,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a9c69bd/09cc4af946484c9c98b9ffb3c3c83bc1/FLAG29ae3cc0d [2021-06-05 20:14:37,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a9c69bd/09cc4af946484c9c98b9ffb3c3c83bc1 [2021-06-05 20:14:37,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:14:37,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 20:14:37,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 20:14:37,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 20:14:37,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 20:14:37,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b91142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37, skipping insertion in model container [2021-06-05 20:14:37,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 20:14:37,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 20:14:37,324 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-06-05 20:14:37,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:14:37,637 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 20:14:37,650 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-06-05 20:14:37,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:14:37,896 INFO L208 MainTranslator]: Completed translation [2021-06-05 20:14:37,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37 WrapperNode [2021-06-05 20:14:37,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 20:14:37,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:14:37,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:14:37,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:14:37,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:14:37,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:14:37,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:14:37,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:14:37,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:37,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:38,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... [2021-06-05 20:14:38,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:14:38,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:14:38,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:14:38,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:14:38,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:14:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 20:14:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 20:14:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 20:14:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-06-05 20:14:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-06-05 20:14:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 20:14:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 20:14:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:14:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:14:38,095 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 20:14:38,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:14:38,549 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 20:14:38,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:14:38 BoogieIcfgContainer [2021-06-05 20:14:38,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:14:38,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:14:38,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:14:38,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:14:38,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:14:37" (1/3) ... [2021-06-05 20:14:38,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9ef2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:14:38, skipping insertion in model container [2021-06-05 20:14:38,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:37" (2/3) ... [2021-06-05 20:14:38,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9ef2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:14:38, skipping insertion in model container [2021-06-05 20:14:38,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:14:38" (3/3) ... [2021-06-05 20:14:38,559 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-06-05 20:14:38,567 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:14:38,568 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:14:38,568 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 20:14:38,569 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:14:38,601 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,601 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,601 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,601 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,602 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,602 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,602 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,602 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,602 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,602 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,603 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,603 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,603 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,603 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,603 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,603 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,625 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,625 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,626 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,627 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,628 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,628 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,628 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,628 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,628 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,628 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,629 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,630 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,632 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,632 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,632 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,632 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,632 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,633 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,633 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,633 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:38,641 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 20:14:38,660 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 20:14:38,692 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:14:38,693 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:14:38,693 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:14:38,693 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:14:38,693 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:14:38,693 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:14:38,693 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:14:38,693 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:14:38,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 94 transitions, 196 flow [2021-06-05 20:14:38,736 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 20:14:38,764 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:38,768 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:38,768 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:38,773 INFO L82 PathProgramCache]: Analyzing trace with hash 597394025, now seen corresponding path program 1 times [2021-06-05 20:14:38,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:38,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906381985] [2021-06-05 20:14:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:38,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:38,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906381985] [2021-06-05 20:14:38,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906381985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:38,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:38,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 20:14:38,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420869750] [2021-06-05 20:14:38,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 20:14:38,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:38,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 20:14:38,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 20:14:38,967 INFO L87 Difference]: Start difference. First operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 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, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:38,987 INFO L93 Difference]: Finished difference Result 345 states and 645 transitions. [2021-06-05 20:14:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 20:14:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-06-05 20:14:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:38,998 INFO L225 Difference]: With dead ends: 345 [2021-06-05 20:14:38,999 INFO L226 Difference]: Without dead ends: 297 [2021-06-05 20:14:39,000 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 20:14:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-06-05 20:14:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-06-05 20:14:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.864864864864865) internal successors, (552), 296 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 552 transitions. [2021-06-05 20:14:39,044 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 552 transitions. Word has length 61 [2021-06-05 20:14:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:39,045 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 552 transitions. [2021-06-05 20:14:39,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 552 transitions. [2021-06-05 20:14:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 20:14:39,048 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:39,048 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:39,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:14:39,049 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1637175769, now seen corresponding path program 1 times [2021-06-05 20:14:39,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:39,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837446990] [2021-06-05 20:14:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:39,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:39,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837446990] [2021-06-05 20:14:39,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837446990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:39,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:39,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:14:39,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786704769] [2021-06-05 20:14:39,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:14:39,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:39,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:14:39,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:14:39,142 INFO L87 Difference]: Start difference. First operand 297 states and 552 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:39,168 INFO L93 Difference]: Finished difference Result 416 states and 790 transitions. [2021-06-05 20:14:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:14:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-06-05 20:14:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:39,176 INFO L225 Difference]: With dead ends: 416 [2021-06-05 20:14:39,176 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 20:14:39,176 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:14:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 20:14:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 314. [2021-06-05 20:14:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.8722044728434504) internal successors, (586), 313 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 586 transitions. [2021-06-05 20:14:39,200 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 586 transitions. Word has length 61 [2021-06-05 20:14:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:39,201 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 586 transitions. [2021-06-05 20:14:39,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 586 transitions. [2021-06-05 20:14:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 20:14:39,203 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:39,203 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:39,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:14:39,203 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:39,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1102163604, now seen corresponding path program 1 times [2021-06-05 20:14:39,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:39,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469158965] [2021-06-05 20:14:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:39,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:39,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469158965] [2021-06-05 20:14:39,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469158965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:39,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588899149] [2021-06-05 20:14:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:39,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 20:14:39,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 20:14:39,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588899149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:39,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 20:14:39,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 20:14:39,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066949668] [2021-06-05 20:14:39,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:14:39,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:39,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:14:39,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 20:14:39,522 INFO L87 Difference]: Start difference. First operand 314 states and 586 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:39,535 INFO L93 Difference]: Finished difference Result 378 states and 714 transitions. [2021-06-05 20:14:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:14:39,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 20:14:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:39,537 INFO L225 Difference]: With dead ends: 378 [2021-06-05 20:14:39,538 INFO L226 Difference]: Without dead ends: 378 [2021-06-05 20:14:39,538 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 20:14:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-06-05 20:14:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 330. [2021-06-05 20:14:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.878419452887538) internal successors, (618), 329 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 618 transitions. [2021-06-05 20:14:39,549 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 618 transitions. Word has length 69 [2021-06-05 20:14:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:39,550 INFO L482 AbstractCegarLoop]: Abstraction has 330 states and 618 transitions. [2021-06-05 20:14:39,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 618 transitions. [2021-06-05 20:14:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-06-05 20:14:39,552 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:39,552 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:39,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 20:14:39,774 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:39,774 INFO L82 PathProgramCache]: Analyzing trace with hash 278330427, now seen corresponding path program 1 times [2021-06-05 20:14:39,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:39,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202894760] [2021-06-05 20:14:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 20:14:39,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:39,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202894760] [2021-06-05 20:14:39,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202894760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:39,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330226133] [2021-06-05 20:14:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:40,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 20:14:40,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 20:14:40,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330226133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:40,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:40,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 20:14:40,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567011249] [2021-06-05 20:14:40,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:14:40,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:14:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:14:40,227 INFO L87 Difference]: Start difference. First operand 330 states and 618 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:40,288 INFO L93 Difference]: Finished difference Result 582 states and 1122 transitions. [2021-06-05 20:14:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 20:14:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-06-05 20:14:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:40,294 INFO L225 Difference]: With dead ends: 582 [2021-06-05 20:14:40,294 INFO L226 Difference]: Without dead ends: 582 [2021-06-05 20:14:40,295 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:14:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-06-05 20:14:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 474. [2021-06-05 20:14:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.9154334038054968) internal successors, (906), 473 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 906 transitions. [2021-06-05 20:14:40,316 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 906 transitions. Word has length 74 [2021-06-05 20:14:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:40,318 INFO L482 AbstractCegarLoop]: Abstraction has 474 states and 906 transitions. [2021-06-05 20:14:40,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 906 transitions. [2021-06-05 20:14:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-06-05 20:14:40,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:40,327 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:40,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:40,551 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:40,552 INFO L82 PathProgramCache]: Analyzing trace with hash 834375958, now seen corresponding path program 2 times [2021-06-05 20:14:40,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:40,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221268054] [2021-06-05 20:14:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-05 20:14:40,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:40,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221268054] [2021-06-05 20:14:40,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221268054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:40,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862669633] [2021-06-05 20:14:40,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:40,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:14:40,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:40,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 20:14:40,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-05 20:14:40,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862669633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:40,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:40,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 20:14:40,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138685879] [2021-06-05 20:14:40,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:14:40,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:40,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:14:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:14:40,928 INFO L87 Difference]: Start difference. First operand 474 states and 906 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:40,969 INFO L93 Difference]: Finished difference Result 666 states and 1290 transitions. [2021-06-05 20:14:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 20:14:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-06-05 20:14:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:40,974 INFO L225 Difference]: With dead ends: 666 [2021-06-05 20:14:40,974 INFO L226 Difference]: Without dead ends: 666 [2021-06-05 20:14:40,975 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:14:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-06-05 20:14:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-06-05 20:14:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.9325463743676223) internal successors, (1146), 593 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1146 transitions. [2021-06-05 20:14:40,993 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1146 transitions. Word has length 82 [2021-06-05 20:14:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:40,996 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1146 transitions. [2021-06-05 20:14:40,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1146 transitions. [2021-06-05 20:14:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-06-05 20:14:41,013 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:41,013 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:41,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:41,214 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1555101393, now seen corresponding path program 3 times [2021-06-05 20:14:41,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:41,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626807306] [2021-06-05 20:14:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 20:14:41,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:41,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626807306] [2021-06-05 20:14:41,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626807306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:41,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539643983] [2021-06-05 20:14:41,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:41,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 20:14:41,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:41,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 20:14:41,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-05 20:14:41,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539643983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:41,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:41,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 20:14:41,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516551671] [2021-06-05 20:14:41,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 20:14:41,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:41,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 20:14:41,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-05 20:14:41,642 INFO L87 Difference]: Start difference. First operand 594 states and 1146 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:42,611 INFO L93 Difference]: Finished difference Result 1220 states and 2398 transitions. [2021-06-05 20:14:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 20:14:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-06-05 20:14:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:42,616 INFO L225 Difference]: With dead ends: 1220 [2021-06-05 20:14:42,616 INFO L226 Difference]: Without dead ends: 1220 [2021-06-05 20:14:42,618 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 783.1ms TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 20:14:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-06-05 20:14:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 938. [2021-06-05 20:14:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.9573105656350054) internal successors, (1834), 937 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1834 transitions. [2021-06-05 20:14:42,640 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1834 transitions. Word has length 87 [2021-06-05 20:14:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:42,640 INFO L482 AbstractCegarLoop]: Abstraction has 938 states and 1834 transitions. [2021-06-05 20:14:42,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1834 transitions. [2021-06-05 20:14:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 20:14:42,643 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:42,643 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:42,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:42,857 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1825972753, now seen corresponding path program 4 times [2021-06-05 20:14:42,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:42,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161541684] [2021-06-05 20:14:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 20:14:42,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:42,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161541684] [2021-06-05 20:14:42,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161541684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:42,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934252729] [2021-06-05 20:14:42,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:43,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 20:14:43,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:43,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 20:14:43,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 20:14:43,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934252729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:43,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:43,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 20:14:43,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182394740] [2021-06-05 20:14:43,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 20:14:43,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:43,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 20:14:43,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 20:14:43,258 INFO L87 Difference]: Start difference. First operand 938 states and 1834 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:43,349 INFO L93 Difference]: Finished difference Result 1330 states and 2618 transitions. [2021-06-05 20:14:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 20:14:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 20:14:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:43,355 INFO L225 Difference]: With dead ends: 1330 [2021-06-05 20:14:43,355 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 20:14:43,355 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 20:14:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 20:14:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1162. [2021-06-05 20:14:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.9655469422911283) internal successors, (2282), 1161 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 2282 transitions. [2021-06-05 20:14:43,382 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 2282 transitions. Word has length 100 [2021-06-05 20:14:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:43,382 INFO L482 AbstractCegarLoop]: Abstraction has 1162 states and 2282 transitions. [2021-06-05 20:14:43,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 2282 transitions. [2021-06-05 20:14:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-06-05 20:14:43,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:43,385 INFO L554 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:43,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 20:14:43,592 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1895625940, now seen corresponding path program 5 times [2021-06-05 20:14:43,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:43,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736749921] [2021-06-05 20:14:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 20:14:43,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:43,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736749921] [2021-06-05 20:14:43,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736749921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:43,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584889405] [2021-06-05 20:14:43,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:43,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 20:14:43,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:43,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 20:14:43,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 20:14:44,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584889405] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:44,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:44,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 20:14:44,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762130289] [2021-06-05 20:14:44,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 20:14:44,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:44,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 20:14:44,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-05 20:14:44,041 INFO L87 Difference]: Start difference. First operand 1162 states and 2282 transitions. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:46,915 INFO L93 Difference]: Finished difference Result 1986 states and 3930 transitions. [2021-06-05 20:14:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-06-05 20:14:46,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-06-05 20:14:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:46,922 INFO L225 Difference]: With dead ends: 1986 [2021-06-05 20:14:46,922 INFO L226 Difference]: Without dead ends: 1986 [2021-06-05 20:14:46,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11192 ImplicationChecksByTransitivity, 2557.6ms TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2021-06-05 20:14:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-06-05 20:14:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1626. [2021-06-05 20:14:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 1.9753846153846153) internal successors, (3210), 1625 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 3210 transitions. [2021-06-05 20:14:46,960 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 3210 transitions. Word has length 108 [2021-06-05 20:14:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:46,960 INFO L482 AbstractCegarLoop]: Abstraction has 1626 states and 3210 transitions. [2021-06-05 20:14:46,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 3210 transitions. [2021-06-05 20:14:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-06-05 20:14:46,964 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:46,964 INFO L554 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:47,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:47,184 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:47,185 INFO L82 PathProgramCache]: Analyzing trace with hash -53848768, now seen corresponding path program 6 times [2021-06-05 20:14:47,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:47,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078657390] [2021-06-05 20:14:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:47,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078657390] [2021-06-05 20:14:47,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078657390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366248979] [2021-06-05 20:14:47,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:47,447 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 20:14:47,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:47,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 20:14:47,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:47,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366248979] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:47,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:47,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 20:14:47,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970989508] [2021-06-05 20:14:47,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 20:14:47,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:47,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 20:14:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-06-05 20:14:47,702 INFO L87 Difference]: Start difference. First operand 1626 states and 3210 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:47,842 INFO L93 Difference]: Finished difference Result 2088 states and 4134 transitions. [2021-06-05 20:14:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 20:14:47,843 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-06-05 20:14:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:47,850 INFO L225 Difference]: With dead ends: 2088 [2021-06-05 20:14:47,850 INFO L226 Difference]: Without dead ends: 2088 [2021-06-05 20:14:47,850 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 160.7ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-06-05 20:14:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1890. [2021-06-05 20:14:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.9788247750132346) internal successors, (3738), 1889 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3738 transitions. [2021-06-05 20:14:47,894 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3738 transitions. Word has length 121 [2021-06-05 20:14:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:47,895 INFO L482 AbstractCegarLoop]: Abstraction has 1890 states and 3738 transitions. [2021-06-05 20:14:47,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3738 transitions. [2021-06-05 20:14:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-06-05 20:14:47,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:47,899 INFO L554 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:48,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:48,113 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:48,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:48,113 INFO L82 PathProgramCache]: Analyzing trace with hash 353614597, now seen corresponding path program 7 times [2021-06-05 20:14:48,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:48,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222833154] [2021-06-05 20:14:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:48,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:48,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222833154] [2021-06-05 20:14:48,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222833154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:48,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253893815] [2021-06-05 20:14:48,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:48,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 20:14:48,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:48,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253893815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:48,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:48,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 20:14:48,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266725844] [2021-06-05 20:14:48,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 20:14:48,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 20:14:48,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-05 20:14:48,571 INFO L87 Difference]: Start difference. First operand 1890 states and 3738 transitions. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:48,752 INFO L93 Difference]: Finished difference Result 2352 states and 4662 transitions. [2021-06-05 20:14:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:14:48,753 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-06-05 20:14:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:48,762 INFO L225 Difference]: With dead ends: 2352 [2021-06-05 20:14:48,762 INFO L226 Difference]: Without dead ends: 2352 [2021-06-05 20:14:48,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 199.2ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-06-05 20:14:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-05 20:14:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2154. [2021-06-05 20:14:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2153 states have (on average 1.981421272642824) internal successors, (4266), 2153 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 4266 transitions. [2021-06-05 20:14:48,808 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 4266 transitions. Word has length 129 [2021-06-05 20:14:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:48,808 INFO L482 AbstractCegarLoop]: Abstraction has 2154 states and 4266 transitions. [2021-06-05 20:14:48,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 4266 transitions. [2021-06-05 20:14:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-06-05 20:14:48,813 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:48,813 INFO L554 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:49,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 20:14:49,038 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:49,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:49,038 INFO L82 PathProgramCache]: Analyzing trace with hash -321811510, now seen corresponding path program 8 times [2021-06-05 20:14:49,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:49,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932398162] [2021-06-05 20:14:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:49,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932398162] [2021-06-05 20:14:49,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932398162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107870064] [2021-06-05 20:14:49,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:49,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:14:49,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:49,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 20:14:49,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:49,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107870064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:49,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:49,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-06-05 20:14:49,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041316789] [2021-06-05 20:14:49,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:14:49,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:14:49,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:14:49,566 INFO L87 Difference]: Start difference. First operand 2154 states and 4266 transitions. Second operand has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:49,787 INFO L93 Difference]: Finished difference Result 2616 states and 5190 transitions. [2021-06-05 20:14:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 20:14:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-06-05 20:14:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:49,795 INFO L225 Difference]: With dead ends: 2616 [2021-06-05 20:14:49,796 INFO L226 Difference]: Without dead ends: 2616 [2021-06-05 20:14:49,796 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 256.8ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 20:14:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-06-05 20:14:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2418. [2021-06-05 20:14:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 1.983450558543649) internal successors, (4794), 2417 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 4794 transitions. [2021-06-05 20:14:49,844 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 4794 transitions. Word has length 137 [2021-06-05 20:14:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:49,844 INFO L482 AbstractCegarLoop]: Abstraction has 2418 states and 4794 transitions. [2021-06-05 20:14:49,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 4794 transitions. [2021-06-05 20:14:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 20:14:49,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:49,849 INFO L554 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:50,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:50,073 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:50,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1785251727, now seen corresponding path program 9 times [2021-06-05 20:14:50,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:50,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373709946] [2021-06-05 20:14:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-05 20:14:50,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:50,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373709946] [2021-06-05 20:14:50,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373709946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:50,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117119016] [2021-06-05 20:14:50,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:50,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 20:14:50,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 20:14:50,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 20:14:50,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117119016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:50,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:50,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-06-05 20:14:50,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566964371] [2021-06-05 20:14:50,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 20:14:50,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 20:14:50,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-06-05 20:14:50,707 INFO L87 Difference]: Start difference. First operand 2418 states and 4794 transitions. Second operand has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:15:01,067 INFO L93 Difference]: Finished difference Result 3568 states and 7094 transitions. [2021-06-05 20:15:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-06-05 20:15:01,067 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 20:15:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:15:01,079 INFO L225 Difference]: With dead ends: 3568 [2021-06-05 20:15:01,079 INFO L226 Difference]: Without dead ends: 3568 [2021-06-05 20:15:01,100 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66931 ImplicationChecksByTransitivity, 9717.8ms TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-06-05 20:15:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-06-05 20:15:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3082. [2021-06-05 20:15:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3081 states have (on average 1.9870172022070756) internal successors, (6122), 3081 states have internal predecessors, (6122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 6122 transitions. [2021-06-05 20:15:01,160 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 6122 transitions. Word has length 145 [2021-06-05 20:15:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:15:01,160 INFO L482 AbstractCegarLoop]: Abstraction has 3082 states and 6122 transitions. [2021-06-05 20:15:01,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 6122 transitions. [2021-06-05 20:15:01,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-06-05 20:15:01,168 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:15:01,168 INFO L554 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:15:01,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:01,393 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:15:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:15:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -113463213, now seen corresponding path program 10 times [2021-06-05 20:15:01,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:15:01,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161431890] [2021-06-05 20:15:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:15:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 20:15:01,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:15:01,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161431890] [2021-06-05 20:15:01,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161431890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:01,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490818416] [2021-06-05 20:15:01,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:01,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 20:15:01,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:15:01,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 20:15:01,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:15:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 20:15:01,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490818416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:01,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:15:01,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 20:15:01,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461796850] [2021-06-05 20:15:01,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 20:15:01,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:15:01,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 20:15:01,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-05 20:15:01,932 INFO L87 Difference]: Start difference. First operand 3082 states and 6122 transitions. Second operand has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:15:02,231 INFO L93 Difference]: Finished difference Result 3614 states and 7186 transitions. [2021-06-05 20:15:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 20:15:02,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-06-05 20:15:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:15:02,242 INFO L225 Difference]: With dead ends: 3614 [2021-06-05 20:15:02,243 INFO L226 Difference]: Without dead ends: 3614 [2021-06-05 20:15:02,243 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 350.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 20:15:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-06-05 20:15:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3386. [2021-06-05 20:15:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.9881831610044314) internal successors, (6730), 3385 states have internal predecessors, (6730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 6730 transitions. [2021-06-05 20:15:02,311 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 6730 transitions. Word has length 158 [2021-06-05 20:15:02,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:15:02,311 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 6730 transitions. [2021-06-05 20:15:02,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 6730 transitions. [2021-06-05 20:15:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-06-05 20:15:02,319 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:15:02,319 INFO L554 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:15:02,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 20:15:02,541 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:15:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:15:02,541 INFO L82 PathProgramCache]: Analyzing trace with hash 116453806, now seen corresponding path program 11 times [2021-06-05 20:15:02,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:15:02,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098959029] [2021-06-05 20:15:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:15:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 20:15:02,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:15:02,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098959029] [2021-06-05 20:15:02,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098959029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:02,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509553413] [2021-06-05 20:15:02,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:02,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 20:15:02,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:15:02,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 20:15:02,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:15:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 20:15:03,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509553413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:03,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:15:03,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 20:15:03,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738397609] [2021-06-05 20:15:03,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:15:03,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:15:03,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:15:03,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:15:03,160 INFO L87 Difference]: Start difference. First operand 3386 states and 6730 transitions. Second operand has 25 states, 25 states have (on average 6.16) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:15:03,512 INFO L93 Difference]: Finished difference Result 3918 states and 7794 transitions. [2021-06-05 20:15:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 20:15:03,512 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.16) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-06-05 20:15:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:15:03,520 INFO L225 Difference]: With dead ends: 3918 [2021-06-05 20:15:03,520 INFO L226 Difference]: Without dead ends: 3918 [2021-06-05 20:15:03,521 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 434.9ms TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:15:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-06-05 20:15:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3690. [2021-06-05 20:15:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 3689 states have (on average 1.9891569531038222) internal successors, (7338), 3689 states have internal predecessors, (7338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 7338 transitions. [2021-06-05 20:15:03,582 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 7338 transitions. Word has length 166 [2021-06-05 20:15:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:15:03,582 INFO L482 AbstractCegarLoop]: Abstraction has 3690 states and 7338 transitions. [2021-06-05 20:15:03,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 6.16) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 7338 transitions. [2021-06-05 20:15:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-06-05 20:15:03,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:15:03,590 INFO L554 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:15:03,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 20:15:03,805 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:15:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:15:03,805 INFO L82 PathProgramCache]: Analyzing trace with hash 891791369, now seen corresponding path program 12 times [2021-06-05 20:15:03,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:15:03,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553227667] [2021-06-05 20:15:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:15:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 20:15:04,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:15:04,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553227667] [2021-06-05 20:15:04,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553227667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:04,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856391705] [2021-06-05 20:15:04,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:04,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 20:15:04,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:15:04,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 20:15:04,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:15:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2021-06-05 20:15:04,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856391705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:04,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:15:04,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2021-06-05 20:15:04,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266152428] [2021-06-05 20:15:04,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 20:15:04,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:15:04,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 20:15:04,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 20:15:04,605 INFO L87 Difference]: Start difference. First operand 3690 states and 7338 transitions. Second operand has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:15:28,705 INFO L93 Difference]: Finished difference Result 5102 states and 10162 transitions. [2021-06-05 20:15:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 596 states. [2021-06-05 20:15:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-06-05 20:15:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:15:28,713 INFO L225 Difference]: With dead ends: 5102 [2021-06-05 20:15:28,714 INFO L226 Difference]: Without dead ends: 5102 [2021-06-05 20:15:28,727 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 1350 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 610 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182683 ImplicationChecksByTransitivity, 23068.4ms TimeCoverageRelationStatistics Valid=68543, Invalid=305389, Unknown=0, NotChecked=0, Total=373932 [2021-06-05 20:15:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2021-06-05 20:15:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 4514. [2021-06-05 20:15:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4513 states have (on average 1.9911367161533349) internal successors, (8986), 4513 states have internal predecessors, (8986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 8986 transitions. [2021-06-05 20:15:28,798 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 8986 transitions. Word has length 174 [2021-06-05 20:15:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:15:28,798 INFO L482 AbstractCegarLoop]: Abstraction has 4514 states and 8986 transitions. [2021-06-05 20:15:28,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 8986 transitions. [2021-06-05 20:15:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-06-05 20:15:28,808 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:15:28,808 INFO L554 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:15:29,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 20:15:29,025 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:15:29,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:15:29,025 INFO L82 PathProgramCache]: Analyzing trace with hash -691800765, now seen corresponding path program 13 times [2021-06-05 20:15:29,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:15:29,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866072532] [2021-06-05 20:15:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:15:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-05 20:15:29,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:15:29,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866072532] [2021-06-05 20:15:29,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866072532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:29,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889744488] [2021-06-05 20:15:29,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:29,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 20:15:29,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:15:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-05 20:15:29,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889744488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:29,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:15:29,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 20:15:29,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518396013] [2021-06-05 20:15:29,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 20:15:29,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:15:29,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 20:15:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-06-05 20:15:29,751 INFO L87 Difference]: Start difference. First operand 4514 states and 8986 transitions. Second operand has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:15:30,220 INFO L93 Difference]: Finished difference Result 5116 states and 10190 transitions. [2021-06-05 20:15:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 20:15:30,220 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-06-05 20:15:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:15:30,228 INFO L225 Difference]: With dead ends: 5116 [2021-06-05 20:15:30,228 INFO L226 Difference]: Without dead ends: 5116 [2021-06-05 20:15:30,229 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 543.3ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 20:15:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2021-06-05 20:15:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 4858. [2021-06-05 20:15:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4857 states have (on average 1.991764463660696) internal successors, (9674), 4857 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 9674 transitions. [2021-06-05 20:15:30,301 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 9674 transitions. Word has length 187 [2021-06-05 20:15:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:15:30,301 INFO L482 AbstractCegarLoop]: Abstraction has 4858 states and 9674 transitions. [2021-06-05 20:15:30,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 9674 transitions. [2021-06-05 20:15:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 20:15:30,311 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:15:30,311 INFO L554 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:15:30,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:30,535 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:15:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:15:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1434167864, now seen corresponding path program 14 times [2021-06-05 20:15:30,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:15:30,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388049941] [2021-06-05 20:15:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:15:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 0 proven. 637 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-05 20:15:30,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:15:30,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388049941] [2021-06-05 20:15:30,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388049941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:30,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256096779] [2021-06-05 20:15:30,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:31,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:15:31,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:15:31,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 20:15:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:15:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 0 proven. 637 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-05 20:15:31,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256096779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:31,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:15:31,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 20:15:31,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503201469] [2021-06-05 20:15:31,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 20:15:31,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:15:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 20:15:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-05 20:15:31,467 INFO L87 Difference]: Start difference. First operand 4858 states and 9674 transitions. Second operand has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:15:32,009 INFO L93 Difference]: Finished difference Result 5460 states and 10878 transitions. [2021-06-05 20:15:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 20:15:32,012 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 20:15:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:15:32,022 INFO L225 Difference]: With dead ends: 5460 [2021-06-05 20:15:32,022 INFO L226 Difference]: Without dead ends: 5460 [2021-06-05 20:15:32,023 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 664.1ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 20:15:32,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-06-05 20:15:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5202. [2021-06-05 20:15:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5201 states have (on average 1.992309171313209) internal successors, (10362), 5201 states have internal predecessors, (10362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 10362 transitions. [2021-06-05 20:15:32,109 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 10362 transitions. Word has length 195 [2021-06-05 20:15:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:15:32,110 INFO L482 AbstractCegarLoop]: Abstraction has 5202 states and 10362 transitions. [2021-06-05 20:15:32,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:15:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 10362 transitions. [2021-06-05 20:15:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-06-05 20:15:32,120 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:15:32,121 INFO L554 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:15:32,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 20:15:32,343 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:15:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:15:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1869766989, now seen corresponding path program 15 times [2021-06-05 20:15:32,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:15:32,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861407016] [2021-06-05 20:15:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:15:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:15:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-05 20:15:32,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:15:32,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861407016] [2021-06-05 20:15:32,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861407016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:32,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865813106] [2021-06-05 20:15:32,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:15:32,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 20:15:32,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:15:32,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 20:15:32,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:15:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2021-06-05 20:15:33,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865813106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:15:33,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:15:33,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2021-06-05 20:15:33,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515024644] [2021-06-05 20:15:33,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-06-05 20:15:33,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:15:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-06-05 20:15:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 20:15:33,362 INFO L87 Difference]: Start difference. First operand 5202 states and 10362 transitions. Second operand has 44 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 44 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:16:23,643 INFO L93 Difference]: Finished difference Result 6876 states and 13710 transitions. [2021-06-05 20:16:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 881 states. [2021-06-05 20:16:23,643 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 44 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-06-05 20:16:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:16:23,652 INFO L225 Difference]: With dead ends: 6876 [2021-06-05 20:16:23,652 INFO L226 Difference]: Without dead ends: 6876 [2021-06-05 20:16:23,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 1947 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 899 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404372 ImplicationChecksByTransitivity, 48322.1ms TimeCoverageRelationStatistics Valid=144350, Invalid=666550, Unknown=0, NotChecked=0, Total=810900 [2021-06-05 20:16:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2021-06-05 20:16:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 6186. [2021-06-05 20:16:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 6185 states have (on average 1.9935327405012127) internal successors, (12330), 6185 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 12330 transitions. [2021-06-05 20:16:23,781 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 12330 transitions. Word has length 203 [2021-06-05 20:16:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:16:23,782 INFO L482 AbstractCegarLoop]: Abstraction has 6186 states and 12330 transitions. [2021-06-05 20:16:23,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 44 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 12330 transitions. [2021-06-05 20:16:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-06-05 20:16:23,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:16:23,793 INFO L554 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:16:24,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 20:16:24,009 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:16:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:16:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1672723051, now seen corresponding path program 16 times [2021-06-05 20:16:24,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:16:24,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607104089] [2021-06-05 20:16:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:16:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:16:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-05 20:16:24,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:16:24,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607104089] [2021-06-05 20:16:24,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607104089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:16:24,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92501439] [2021-06-05 20:16:24,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:16:24,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 20:16:24,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:16:24,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 20:16:24,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:16:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-05 20:16:24,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92501439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:16:24,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:16:24,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-05 20:16:24,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350116971] [2021-06-05 20:16:24,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 20:16:24,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:16:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 20:16:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:16:24,974 INFO L87 Difference]: Start difference. First operand 6186 states and 12330 transitions. Second operand has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:16:25,651 INFO L93 Difference]: Finished difference Result 6858 states and 13674 transitions. [2021-06-05 20:16:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 20:16:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2021-06-05 20:16:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:16:25,661 INFO L225 Difference]: With dead ends: 6858 [2021-06-05 20:16:25,661 INFO L226 Difference]: Without dead ends: 6858 [2021-06-05 20:16:25,662 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 938.3ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 20:16:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2021-06-05 20:16:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 6570. [2021-06-05 20:16:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 6569 states have (on average 1.9939107931191962) internal successors, (13098), 6569 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:25,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 13098 transitions. [2021-06-05 20:16:25,772 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 13098 transitions. Word has length 216 [2021-06-05 20:16:25,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:16:25,773 INFO L482 AbstractCegarLoop]: Abstraction has 6570 states and 13098 transitions. [2021-06-05 20:16:25,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 13098 transitions. [2021-06-05 20:16:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-06-05 20:16:25,786 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:16:25,786 INFO L554 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:16:26,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:16:26,012 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:16:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:16:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2057113392, now seen corresponding path program 17 times [2021-06-05 20:16:26,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:16:26,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437747261] [2021-06-05 20:16:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:16:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:16:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-05 20:16:26,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:16:26,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437747261] [2021-06-05 20:16:26,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437747261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:16:26,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850561618] [2021-06-05 20:16:26,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:16:26,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 20:16:26,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:16:26,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 20:16:26,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:16:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-05 20:16:26,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850561618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:16:26,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:16:26,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 20:16:26,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609494873] [2021-06-05 20:16:26,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 20:16:26,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:16:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 20:16:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 20:16:26,940 INFO L87 Difference]: Start difference. First operand 6570 states and 13098 transitions. Second operand has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:16:27,690 INFO L93 Difference]: Finished difference Result 7242 states and 14442 transitions. [2021-06-05 20:16:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 20:16:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-06-05 20:16:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:16:27,700 INFO L225 Difference]: With dead ends: 7242 [2021-06-05 20:16:27,700 INFO L226 Difference]: Without dead ends: 7242 [2021-06-05 20:16:27,701 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 922.5ms TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 20:16:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2021-06-05 20:16:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 6954. [2021-06-05 20:16:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6953 states have (on average 1.9942470875880915) internal successors, (13866), 6953 states have internal predecessors, (13866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 13866 transitions. [2021-06-05 20:16:27,813 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 13866 transitions. Word has length 224 [2021-06-05 20:16:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:16:27,813 INFO L482 AbstractCegarLoop]: Abstraction has 6954 states and 13866 transitions. [2021-06-05 20:16:27,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 13866 transitions. [2021-06-05 20:16:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-06-05 20:16:27,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:16:27,826 INFO L554 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:16:28,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:16:28,049 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:16:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:16:28,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1987834421, now seen corresponding path program 18 times [2021-06-05 20:16:28,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:16:28,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108565665] [2021-06-05 20:16:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:16:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:16:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 1105 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-05 20:16:28,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:16:28,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108565665] [2021-06-05 20:16:28,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108565665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:16:28,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477343924] [2021-06-05 20:16:28,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:16:28,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 20:16:28,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:16:28,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 20:16:28,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:16:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2021-06-05 20:16:29,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477343924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:16:29,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:16:29,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2021-06-05 20:16:29,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375732162] [2021-06-05 20:16:29,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-05 20:16:29,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:16:29,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-05 20:16:29,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:16:29,504 INFO L87 Difference]: Start difference. First operand 6954 states and 13866 transitions. Second operand has 52 states, 52 states have (on average 4.980769230769231) internal successors, (259), 52 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:16:51,214 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-05 20:17:35,401 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-05 20:18:00,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:18:00,141 INFO L93 Difference]: Finished difference Result 8890 states and 17738 transitions. [2021-06-05 20:18:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1220 states. [2021-06-05 20:18:00,141 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.980769230769231) internal successors, (259), 52 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-06-05 20:18:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:18:00,148 INFO L225 Difference]: With dead ends: 8890 [2021-06-05 20:18:00,149 INFO L226 Difference]: Without dead ends: 8890 [2021-06-05 20:18:00,203 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 2652 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 1242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781609 ImplicationChecksByTransitivity, 87325.9ms TimeCoverageRelationStatistics Valid=269445, Invalid=1276847, Unknown=0, NotChecked=0, Total=1546292 [2021-06-05 20:18:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2021-06-05 20:18:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 8098. [2021-06-05 20:18:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 8097 states have (on average 1.995059898727924) internal successors, (16154), 8097 states have internal predecessors, (16154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 16154 transitions. [2021-06-05 20:18:00,306 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 16154 transitions. Word has length 232 [2021-06-05 20:18:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:18:00,306 INFO L482 AbstractCegarLoop]: Abstraction has 8098 states and 16154 transitions. [2021-06-05 20:18:00,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 4.980769230769231) internal successors, (259), 52 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 16154 transitions. [2021-06-05 20:18:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-06-05 20:18:00,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:18:00,321 INFO L554 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:18:00,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:18:00,542 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:18:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:18:00,542 INFO L82 PathProgramCache]: Analyzing trace with hash 367130753, now seen corresponding path program 19 times [2021-06-05 20:18:00,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:18:00,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218010480] [2021-06-05 20:18:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:18:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:18:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 1242 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-05 20:18:01,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:18:01,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218010480] [2021-06-05 20:18:01,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218010480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:18:01,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445621407] [2021-06-05 20:18:01,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:18:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:18:01,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 20:18:01,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:18:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 1242 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-05 20:18:01,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445621407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:18:01,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:18:01,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-06-05 20:18:01,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681182315] [2021-06-05 20:18:01,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 20:18:01,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:18:01,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 20:18:01,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 20:18:01,579 INFO L87 Difference]: Start difference. First operand 8098 states and 16154 transitions. Second operand has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:18:02,430 INFO L93 Difference]: Finished difference Result 8840 states and 17638 transitions. [2021-06-05 20:18:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 20:18:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2021-06-05 20:18:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:18:02,438 INFO L225 Difference]: With dead ends: 8840 [2021-06-05 20:18:02,438 INFO L226 Difference]: Without dead ends: 8840 [2021-06-05 20:18:02,438 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1098.0ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 20:18:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2021-06-05 20:18:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 8522. [2021-06-05 20:18:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8522 states, 8521 states have (on average 1.9953057152916325) internal successors, (17002), 8521 states have internal predecessors, (17002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 17002 transitions. [2021-06-05 20:18:02,542 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 17002 transitions. Word has length 245 [2021-06-05 20:18:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:18:02,543 INFO L482 AbstractCegarLoop]: Abstraction has 8522 states and 17002 transitions. [2021-06-05 20:18:02,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 17002 transitions. [2021-06-05 20:18:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-06-05 20:18:02,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:18:02,553 INFO L554 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:18:02,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-05 20:18:02,772 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:18:02,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:18:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1797408570, now seen corresponding path program 20 times [2021-06-05 20:18:02,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:18:02,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587845054] [2021-06-05 20:18:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:18:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:18:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-05 20:18:03,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:18:03,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587845054] [2021-06-05 20:18:03,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587845054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:18:03,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140206336] [2021-06-05 20:18:03,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:18:03,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:18:03,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:18:03,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 20:18:03,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:18:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-05 20:18:04,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140206336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:18:04,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:18:04,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-06-05 20:18:04,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248785646] [2021-06-05 20:18:04,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-06-05 20:18:04,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:18:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-06-05 20:18:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 20:18:04,103 INFO L87 Difference]: Start difference. First operand 8522 states and 17002 transitions. Second operand has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:18:05,047 INFO L93 Difference]: Finished difference Result 8946 states and 17850 transitions. [2021-06-05 20:18:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 20:18:05,048 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2021-06-05 20:18:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:18:05,055 INFO L225 Difference]: With dead ends: 8946 [2021-06-05 20:18:05,055 INFO L226 Difference]: Without dead ends: 8946 [2021-06-05 20:18:05,056 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1205.2ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 20:18:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8946 states. [2021-06-05 20:18:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8946 to 8946. [2021-06-05 20:18:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8946 states, 8945 states have (on average 1.995528228060369) internal successors, (17850), 8945 states have internal predecessors, (17850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8946 states to 8946 states and 17850 transitions. [2021-06-05 20:18:05,164 INFO L78 Accepts]: Start accepts. Automaton has 8946 states and 17850 transitions. Word has length 253 [2021-06-05 20:18:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:18:05,164 INFO L482 AbstractCegarLoop]: Abstraction has 8946 states and 17850 transitions. [2021-06-05 20:18:05,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:18:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8946 states and 17850 transitions. [2021-06-05 20:18:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-06-05 20:18:05,175 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:18:05,175 INFO L554 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:18:05,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 20:18:05,393 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:18:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:18:05,393 INFO L82 PathProgramCache]: Analyzing trace with hash 847995915, now seen corresponding path program 21 times [2021-06-05 20:18:05,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:18:05,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401540081] [2021-06-05 20:18:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:18:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:18:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 0 proven. 1688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:18:06,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:18:06,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401540081] [2021-06-05 20:18:06,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401540081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:18:06,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134382392] [2021-06-05 20:18:06,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:18:06,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 20:18:06,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:18:06,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 20:18:06,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:18:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2021-06-05 20:18:07,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134382392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:18:07,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:18:07,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 19] total 71 [2021-06-05 20:18:07,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111430523] [2021-06-05 20:18:07,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 20:18:07,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:18:07,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 20:18:07,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=819, Invalid=4151, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 20:18:07,327 INFO L87 Difference]: Start difference. First operand 8946 states and 17850 transitions. Second operand has 71 states, 71 states have (on average 4.957746478873239) internal successors, (352), 71 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:20:56,005 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 20:22:44,285 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-05 20:23:33,905 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 12 Received shutdown request... [2021-06-05 20:26:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3467 states. [2021-06-05 20:26:07,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:07,638 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 20:26:07,640 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 20:26:07,641 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 20:26:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:26:07 BasicIcfg [2021-06-05 20:26:07,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 20:26:07,642 INFO L168 Benchmark]: Toolchain (without parser) took 690550.46 ms. Allocated memory was 329.3 MB in the beginning and 12.4 GB in the end (delta: 12.0 GB). Free memory was 290.5 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. [2021-06-05 20:26:07,642 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 329.3 MB. Free memory is still 309.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:26:07,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.11 ms. Allocated memory is still 329.3 MB. Free memory was 290.3 MB in the beginning and 238.0 MB in the end (delta: 52.3 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:07,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.31 ms. Allocated memory is still 329.3 MB. Free memory was 238.0 MB in the beginning and 235.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:07,642 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 329.3 MB. Free memory was 235.9 MB in the beginning and 233.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:07,642 INFO L168 Benchmark]: RCFGBuilder took 544.11 ms. Allocated memory is still 329.3 MB. Free memory was 233.8 MB in the beginning and 205.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:07,642 INFO L168 Benchmark]: TraceAbstraction took 689088.87 ms. Allocated memory was 329.3 MB in the beginning and 12.4 GB in the end (delta: 12.0 GB). Free memory was 205.5 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-06-05 20:26:07,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 329.3 MB. Free memory is still 309.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 803.11 ms. Allocated memory is still 329.3 MB. Free memory was 290.3 MB in the beginning and 238.0 MB in the end (delta: 52.3 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 65.31 ms. Allocated memory is still 329.3 MB. Free memory was 238.0 MB in the beginning and 235.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 329.3 MB. Free memory was 235.9 MB in the beginning and 233.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 544.11 ms. Allocated memory is still 329.3 MB. Free memory was 233.8 MB in the beginning and 205.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 689088.87 ms. Allocated memory was 329.3 MB in the beginning and 12.4 GB in the end (delta: 12.0 GB). Free memory was 205.5 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (8946states) and FLOYD_HOARE automaton (currently 3467 states, 71 states before enhancement),while ReachableStatesComputation was computing reachable states (234868 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 688947.8ms, OverallIterations: 24, TraceHistogramMax: 20, EmptinessCheckTime: 196.5ms, AutomataDifference: 665246.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 43.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2552 SDtfs, 69081 SDslu, 38937 SDs, 0 SdLazy, 8389 SolverSat, 14462 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11480.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17717 GetRequests, 10287 SyntacticMatches, 0 SemanticMatches, 7430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9008376 ImplicationChecksByTransitivity, 526452.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8946occurred in iteration=23, InterpolantAutomatonStates: 3737, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1358.2ms AutomataMinimizationTime, 23 MinimizatonAttempts, 6156 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 761.1ms SsaConstructionTime, 1803.2ms SatisfiabilityAnalysisTime, 13245.5ms InterpolantComputationTime, 7254 NumberOfCodeBlocks, 7030 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 7208 ConstructedInterpolants, 0 QuantifiedInterpolants, 13353 SizeOfPredicates, 340 NumberOfNonLiveVariables, 7197 ConjunctsInSsa, 384 ConjunctsInUnsatCore, 46 InterpolantComputations, 3 PerfectInterpolantSequences, 6286/24460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown