/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-Separate.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-dev-29289db [2021-06-05 10:45:58,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:45:58,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:45:58,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 10:45:58,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 10:45:58,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 10:45:58,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 10:45:58,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 10:45:58,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 10:45:58,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 10:45:58,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 10:45:58,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 10:45:58,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:45:58,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:45:58,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:45:58,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:45:58,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:45:58,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:45:58,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:45:58,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:45:58,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:45:58,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:45:58,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:45:58,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:45:58,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:45:58,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:45:58,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:45:58,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:45:58,574 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-Separate.epf [2021-06-05 10:45:58,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:45:58,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:45:58,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:45:58,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:45:58,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:45:58,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:45:58,613 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:45:58,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:45:58,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:45:58,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:45:58,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:45:58,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:45:58,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:45:58,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:45:58,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:45:58,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:45:58,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:45:58,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:45:58,617 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:45:58,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:45:58,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:45:58,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:45:58,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:45:58,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:45:58,910 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:45:58,911 INFO L432 ainManager$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 10:45:58,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86031953d/eaf6d14c2885413eb55de6c0ddce046c/FLAG19fce4805 [2021-06-05 10:45:59,502 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:45:59,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-05 10:45:59,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86031953d/eaf6d14c2885413eb55de6c0ddce046c/FLAG19fce4805 [2021-06-05 10:45:59,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86031953d/eaf6d14c2885413eb55de6c0ddce046c [2021-06-05 10:45:59,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:45:59,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:45:59,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:45:59,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:45:59,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:45:59,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:45:59" (1/1) ... [2021-06-05 10:45:59,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9439c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:59, skipping insertion in model container [2021-06-05 10:45:59,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:45:59" (1/1) ... [2021-06-05 10:45:59,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:45:59,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:46:00,024 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 10:46:00,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:46:00,427 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:46:00,437 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 10:46:00,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:46:00,675 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:46:00,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00 WrapperNode [2021-06-05 10:46:00,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:46:00,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:46:00,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:46:00,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:46:00,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:46:00,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:46:00,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:46:00,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:46:00,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (1/1) ... [2021-06-05 10:46:00,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:46:00,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:46:00,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:46:00,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:46:00,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (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 10:46:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:46:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:46:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 10:46:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-06-05 10:46:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-06-05 10:46:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:46:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:46:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:46:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:46:00,861 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 10:46:01,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:46:01,225 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:46:01,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:46:01 BoogieIcfgContainer [2021-06-05 10:46:01,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:46:01,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:46:01,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:46:01,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:46:01,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:45:59" (1/3) ... [2021-06-05 10:46:01,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba81cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:46:01, skipping insertion in model container [2021-06-05 10:46:01,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:46:00" (2/3) ... [2021-06-05 10:46:01,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba81cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:46:01, skipping insertion in model container [2021-06-05 10:46:01,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:46:01" (3/3) ... [2021-06-05 10:46:01,233 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-06-05 10:46:01,237 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:46:01,238 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:46:01,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:46:01,238 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:46:01,260 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,260 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,260 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,260 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,260 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,261 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,262 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,262 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,262 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,262 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,262 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,262 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,263 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,264 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,264 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,264 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,264 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,264 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,264 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,265 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,266 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,266 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,267 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,268 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,268 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,268 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,268 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,268 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,269 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,269 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:46:01,275 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 10:46:01,293 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 10:46:01,310 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:46:01,310 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:46:01,310 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:46:01,310 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:46:01,310 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:46:01,311 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:46:01,311 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:46:01,311 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:46:01,319 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 94 transitions, 196 flow [2021-06-05 10:46:01,340 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 10:46:01,344 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 10:46:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:46:01,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:01,356 INFO L521 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 10:46:01,357 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1922949937, now seen corresponding path program 1 times [2021-06-05 10:46:01,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:01,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785766432] [2021-06-05 10:46:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:01,586 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 10:46:01,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:01,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785766432] [2021-06-05 10:46:01,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785766432] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:46:01,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:46:01,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 10:46:01,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606108827] [2021-06-05 10:46:01,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 10:46:01,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:01,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 10:46:01,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 10:46:01,613 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 10:46:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:01,633 INFO L93 Difference]: Finished difference Result 345 states and 645 transitions. [2021-06-05 10:46:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 10:46:01,634 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 10:46:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:01,644 INFO L225 Difference]: With dead ends: 345 [2021-06-05 10:46:01,644 INFO L226 Difference]: Without dead ends: 297 [2021-06-05 10:46:01,645 INFO L777 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 10:46:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-06-05 10:46:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-06-05 10:46:01,689 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 10:46:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 552 transitions. [2021-06-05 10:46:01,692 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 552 transitions. Word has length 61 [2021-06-05 10:46:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:01,693 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 552 transitions. [2021-06-05 10:46:01,693 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 10:46:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 552 transitions. [2021-06-05 10:46:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:46:01,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:01,697 INFO L521 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 10:46:01,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:46:01,697 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:01,698 INFO L82 PathProgramCache]: Analyzing trace with hash 69507375, now seen corresponding path program 1 times [2021-06-05 10:46:01,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:01,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094587063] [2021-06-05 10:46:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:01,822 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 10:46:01,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:01,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094587063] [2021-06-05 10:46:01,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094587063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:46:01,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:46:01,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 10:46:01,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545459530] [2021-06-05 10:46:01,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 10:46:01,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 10:46:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 10:46:01,828 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 10:46:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:01,876 INFO L93 Difference]: Finished difference Result 357 states and 672 transitions. [2021-06-05 10:46:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 10:46:01,877 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 10:46:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:01,881 INFO L225 Difference]: With dead ends: 357 [2021-06-05 10:46:01,881 INFO L226 Difference]: Without dead ends: 357 [2021-06-05 10:46:01,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 10:46:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-05 10:46:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 312. [2021-06-05 10:46:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.8713826366559485) internal successors, (582), 311 states have internal predecessors, (582), 0 states have call successors, (0), 0 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 10:46:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 582 transitions. [2021-06-05 10:46:01,907 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 582 transitions. Word has length 61 [2021-06-05 10:46:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:01,908 INFO L482 AbstractCegarLoop]: Abstraction has 312 states and 582 transitions. [2021-06-05 10:46:01,908 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 10:46:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 582 transitions. [2021-06-05 10:46:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 10:46:01,922 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:01,922 INFO L521 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] [2021-06-05 10:46:01,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:46:01,923 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:01,923 INFO L82 PathProgramCache]: Analyzing trace with hash 518804448, now seen corresponding path program 1 times [2021-06-05 10:46:01,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:01,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831508950] [2021-06-05 10:46:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:02,030 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 10:46:02,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:02,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831508950] [2021-06-05 10:46:02,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831508950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:02,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717208479] [2021-06-05 10:46:02,031 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 10:46:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:02,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 10:46:02,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:02,381 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 10:46:02,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717208479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:46:02,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 10:46:02,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 10:46:02,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853250935] [2021-06-05 10:46:02,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 10:46:02,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:02,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 10:46:02,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:46:02,384 INFO L87 Difference]: Start difference. First operand 312 states and 582 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 10:46:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:02,397 INFO L93 Difference]: Finished difference Result 438 states and 834 transitions. [2021-06-05 10:46:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 10:46:02,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-06-05 10:46:02,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:02,400 INFO L225 Difference]: With dead ends: 438 [2021-06-05 10:46:02,400 INFO L226 Difference]: Without dead ends: 438 [2021-06-05 10:46:02,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:46:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-06-05 10:46:02,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 330. [2021-06-05 10:46:02,410 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 10:46:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 618 transitions. [2021-06-05 10:46:02,411 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 618 transitions. Word has length 66 [2021-06-05 10:46:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:02,412 INFO L482 AbstractCegarLoop]: Abstraction has 330 states and 618 transitions. [2021-06-05 10:46:02,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 10:46:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 618 transitions. [2021-06-05 10:46:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-06-05 10:46:02,415 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:02,415 INFO L521 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 10:46:02,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 10:46:02,621 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash -393434949, now seen corresponding path program 1 times [2021-06-05 10:46:02,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:02,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337018741] [2021-06-05 10:46:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:02,695 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 10:46:02,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:02,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337018741] [2021-06-05 10:46:02,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337018741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:02,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627332456] [2021-06-05 10:46:02,696 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 10:46:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:02,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 10:46:02,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:03,018 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 10:46:03,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627332456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:03,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:03,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 10:46:03,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049794757] [2021-06-05 10:46:03,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:46:03,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:46:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:46:03,021 INFO L87 Difference]: Start difference. First operand 330 states and 618 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 10:46:03,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:03,114 INFO L93 Difference]: Finished difference Result 458 states and 874 transitions. [2021-06-05 10:46:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 10:46:03,115 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 74 [2021-06-05 10:46:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:03,120 INFO L225 Difference]: With dead ends: 458 [2021-06-05 10:46:03,120 INFO L226 Difference]: Without dead ends: 458 [2021-06-05 10:46:03,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 10:46:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-06-05 10:46:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 410. [2021-06-05 10:46:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.902200488997555) internal successors, (778), 409 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 10:46:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 778 transitions. [2021-06-05 10:46:03,138 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 778 transitions. Word has length 74 [2021-06-05 10:46:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:03,144 INFO L482 AbstractCegarLoop]: Abstraction has 410 states and 778 transitions. [2021-06-05 10:46:03,144 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 10:46:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 778 transitions. [2021-06-05 10:46:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-06-05 10:46:03,148 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:03,148 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-06-05 10:46:03,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:03,357 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:03,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:03,357 INFO L82 PathProgramCache]: Analyzing trace with hash 402363818, now seen corresponding path program 2 times [2021-06-05 10:46:03,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:03,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981600276] [2021-06-05 10:46:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 10:46:03,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:03,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981600276] [2021-06-05 10:46:03,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981600276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:03,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104760980] [2021-06-05 10:46:03,420 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 10:46:03,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:46:03,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:03,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 10:46:03,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 10:46:03,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104760980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:03,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:03,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 10:46:03,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571337157] [2021-06-05 10:46:03,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:46:03,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:46:03,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:46:03,691 INFO L87 Difference]: Start difference. First operand 410 states and 778 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 10:46:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:03,749 INFO L93 Difference]: Finished difference Result 732 states and 1422 transitions. [2021-06-05 10:46:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 10:46:03,750 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 79 [2021-06-05 10:46:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:03,758 INFO L225 Difference]: With dead ends: 732 [2021-06-05 10:46:03,759 INFO L226 Difference]: Without dead ends: 732 [2021-06-05 10:46:03,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 10:46:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-06-05 10:46:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 594. [2021-06-05 10:46:03,773 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 10:46:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1146 transitions. [2021-06-05 10:46:03,775 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1146 transitions. Word has length 79 [2021-06-05 10:46:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:03,776 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1146 transitions. [2021-06-05 10:46:03,776 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 10:46:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1146 transitions. [2021-06-05 10:46:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-06-05 10:46:03,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:03,779 INFO L521 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 10:46:04,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:04,003 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:04,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1060470651, now seen corresponding path program 3 times [2021-06-05 10:46:04,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:04,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547076236] [2021-06-05 10:46:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:04,095 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 10:46:04,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:04,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547076236] [2021-06-05 10:46:04,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547076236] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:04,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340023540] [2021-06-05 10:46:04,098 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 10:46:04,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 10:46:04,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:04,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 10:46:04,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:04,437 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 10:46:04,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340023540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:04,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:04,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 10:46:04,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459684357] [2021-06-05 10:46:04,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 10:46:04,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:04,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 10:46:04,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:46:04,439 INFO L87 Difference]: Start difference. First operand 594 states and 1146 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 10:46:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:05,359 INFO L93 Difference]: Finished difference Result 1220 states and 2398 transitions. [2021-06-05 10:46:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 10:46:05,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have 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 10:46:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:05,364 INFO L225 Difference]: With dead ends: 1220 [2021-06-05 10:46:05,365 INFO L226 Difference]: Without dead ends: 1220 [2021-06-05 10:46:05,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 749.5ms TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 10:46:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-06-05 10:46:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 938. [2021-06-05 10:46:05,385 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 10:46:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1834 transitions. [2021-06-05 10:46:05,387 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1834 transitions. Word has length 87 [2021-06-05 10:46:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:05,388 INFO L482 AbstractCegarLoop]: Abstraction has 938 states and 1834 transitions. [2021-06-05 10:46:05,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 10:46:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1834 transitions. [2021-06-05 10:46:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 10:46:05,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:05,390 INFO L521 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 10:46:05,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:05,605 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1607478993, now seen corresponding path program 4 times [2021-06-05 10:46:05,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:05,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829319120] [2021-06-05 10:46:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 10:46:05,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:05,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829319120] [2021-06-05 10:46:05,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829319120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:05,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298841237] [2021-06-05 10:46:05,685 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 10:46:05,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:46:05,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:05,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 10:46:05,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 10:46:05,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298841237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:05,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:05,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 10:46:05,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19353638] [2021-06-05 10:46:05,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 10:46:05,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 10:46:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:46:05,971 INFO L87 Difference]: Start difference. First operand 938 states and 1834 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:06,068 INFO L93 Difference]: Finished difference Result 1194 states and 2346 transitions. [2021-06-05 10:46:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 10:46:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 10:46:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:06,073 INFO L225 Difference]: With dead ends: 1194 [2021-06-05 10:46:06,073 INFO L226 Difference]: Without dead ends: 1194 [2021-06-05 10:46:06,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 10:46:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-06-05 10:46:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1098. [2021-06-05 10:46:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.9635369188696445) internal successors, (2154), 1097 states have internal predecessors, (2154), 0 states have call successors, (0), 0 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 10:46:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2154 transitions. [2021-06-05 10:46:06,098 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2154 transitions. Word has length 100 [2021-06-05 10:46:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:06,098 INFO L482 AbstractCegarLoop]: Abstraction has 1098 states and 2154 transitions. [2021-06-05 10:46:06,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2154 transitions. [2021-06-05 10:46:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 10:46:06,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:06,101 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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 10:46:06,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 10:46:06,326 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1071562496, now seen corresponding path program 5 times [2021-06-05 10:46:06,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:06,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148694265] [2021-06-05 10:46:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 10:46:06,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:06,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148694265] [2021-06-05 10:46:06,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148694265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:06,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410675898] [2021-06-05 10:46:06,445 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 10:46:06,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 10:46:06,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:06,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 10:46:06,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 10:46:06,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410675898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:06,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:06,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 10:46:06,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326845662] [2021-06-05 10:46:06,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 10:46:06,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:06,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 10:46:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:46:06,714 INFO L87 Difference]: Start difference. First operand 1098 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 10:46:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:06,827 INFO L93 Difference]: Finished difference Result 1354 states and 2666 transitions. [2021-06-05 10:46:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 10:46:06,827 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 10:46:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:06,832 INFO L225 Difference]: With dead ends: 1354 [2021-06-05 10:46:06,832 INFO L226 Difference]: Without dead ends: 1354 [2021-06-05 10:46:06,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-05 10:46:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-06-05 10:46:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1258. [2021-06-05 10:46:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 1.9681782020684169) internal successors, (2474), 1257 states have internal predecessors, (2474), 0 states have call successors, (0), 0 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 10:46:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2474 transitions. [2021-06-05 10:46:06,859 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2474 transitions. Word has length 105 [2021-06-05 10:46:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:06,859 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 2474 transitions. [2021-06-05 10:46:06,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 10:46:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2474 transitions. [2021-06-05 10:46:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 10:46:06,863 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:06,863 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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 10:46:07,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:07,077 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:07,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:07,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1117647921, now seen corresponding path program 6 times [2021-06-05 10:46:07,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:07,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31754920] [2021-06-05 10:46:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 10:46:07,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:07,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31754920] [2021-06-05 10:46:07,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31754920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:07,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724589737] [2021-06-05 10:46:07,187 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 10:46:07,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 10:46:07,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:07,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 10:46:07,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 10:46:07,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724589737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:07,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:07,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2021-06-05 10:46:07,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773176292] [2021-06-05 10:46:07,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 10:46:07,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:07,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 10:46:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 10:46:07,553 INFO L87 Difference]: Start difference. First operand 1258 states and 2474 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:11,518 INFO L93 Difference]: Finished difference Result 2158 states and 4274 transitions. [2021-06-05 10:46:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2021-06-05 10:46:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 10:46:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:11,527 INFO L225 Difference]: With dead ends: 2158 [2021-06-05 10:46:11,527 INFO L226 Difference]: Without dead ends: 2158 [2021-06-05 10:46:11,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16756 ImplicationChecksByTransitivity, 3561.0ms TimeCoverageRelationStatistics Valid=7859, Invalid=30361, Unknown=0, NotChecked=0, Total=38220 [2021-06-05 10:46:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-06-05 10:46:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1762. [2021-06-05 10:46:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1761 states have (on average 1.9772856331629756) internal successors, (3482), 1761 states have internal predecessors, (3482), 0 states have call successors, (0), 0 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 10:46:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3482 transitions. [2021-06-05 10:46:11,570 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3482 transitions. Word has length 110 [2021-06-05 10:46:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:11,570 INFO L482 AbstractCegarLoop]: Abstraction has 1762 states and 3482 transitions. [2021-06-05 10:46:11,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3482 transitions. [2021-06-05 10:46:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-06-05 10:46:11,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:11,575 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 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 10:46:11,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:11,776 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:11,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1276635771, now seen corresponding path program 7 times [2021-06-05 10:46:11,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:11,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880299257] [2021-06-05 10:46:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 10:46:11,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:11,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880299257] [2021-06-05 10:46:11,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880299257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:11,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334706339] [2021-06-05 10:46:11,907 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 10:46:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:12,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 10:46:12,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 10:46:12,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334706339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:12,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:12,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 10:46:12,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030202528] [2021-06-05 10:46:12,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 10:46:12,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:12,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 10:46:12,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-05 10:46:12,247 INFO L87 Difference]: Start difference. First operand 1762 states and 3482 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 10:46:12,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:12,440 INFO L93 Difference]: Finished difference Result 2082 states and 4122 transitions. [2021-06-05 10:46:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 10:46:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-06-05 10:46:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:12,448 INFO L225 Difference]: With dead ends: 2082 [2021-06-05 10:46:12,448 INFO L226 Difference]: Without dead ends: 2082 [2021-06-05 10:46:12,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 204.8ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-06-05 10:46:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-06-05 10:46:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1962. [2021-06-05 10:46:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.979602243753187) internal successors, (3882), 1961 states have internal predecessors, (3882), 0 states have call successors, (0), 0 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 10:46:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 3882 transitions. [2021-06-05 10:46:12,492 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 3882 transitions. Word has length 123 [2021-06-05 10:46:12,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:12,492 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 3882 transitions. [2021-06-05 10:46:12,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 10:46:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 3882 transitions. [2021-06-05 10:46:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-06-05 10:46:12,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:12,498 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 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 10:46:12,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 10:46:12,713 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1626379628, now seen corresponding path program 8 times [2021-06-05 10:46:12,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:12,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195088602] [2021-06-05 10:46:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 10:46:12,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:12,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195088602] [2021-06-05 10:46:12,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195088602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:12,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762735299] [2021-06-05 10:46:12,901 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 10:46:12,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:46:12,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:12,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 10:46:12,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 10:46:13,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762735299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:13,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:13,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-06-05 10:46:13,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150481108] [2021-06-05 10:46:13,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 10:46:13,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:13,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 10:46:13,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-06-05 10:46:13,192 INFO L87 Difference]: Start difference. First operand 1962 states and 3882 transitions. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:13,410 INFO L93 Difference]: Finished difference Result 2282 states and 4522 transitions. [2021-06-05 10:46:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 10:46:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-06-05 10:46:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:13,419 INFO L225 Difference]: With dead ends: 2282 [2021-06-05 10:46:13,419 INFO L226 Difference]: Without dead ends: 2282 [2021-06-05 10:46:13,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 260.6ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 10:46:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-06-05 10:46:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2162. [2021-06-05 10:46:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2161 states have (on average 1.98149005090236) internal successors, (4282), 2161 states have internal predecessors, (4282), 0 states have call successors, (0), 0 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 10:46:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 4282 transitions. [2021-06-05 10:46:13,461 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 4282 transitions. Word has length 128 [2021-06-05 10:46:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:13,461 INFO L482 AbstractCegarLoop]: Abstraction has 2162 states and 4282 transitions. [2021-06-05 10:46:13,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 4282 transitions. [2021-06-05 10:46:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-06-05 10:46:13,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:13,466 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 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 10:46:13,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:13,677 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:13,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1177688347, now seen corresponding path program 9 times [2021-06-05 10:46:13,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:13,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342893612] [2021-06-05 10:46:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 10:46:13,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:13,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342893612] [2021-06-05 10:46:13,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342893612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:13,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874171958] [2021-06-05 10:46:13,867 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 10:46:14,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 10:46:14,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:14,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 10:46:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-05 10:46:14,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874171958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:14,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:14,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-06-05 10:46:14,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860068866] [2021-06-05 10:46:14,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 10:46:14,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 10:46:14,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-06-05 10:46:14,323 INFO L87 Difference]: Start difference. First operand 2162 states and 4282 transitions. Second operand has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:24,854 INFO L93 Difference]: Finished difference Result 3336 states and 6630 transitions. [2021-06-05 10:46:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-06-05 10:46:24,855 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-06-05 10:46:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:24,863 INFO L225 Difference]: With dead ends: 3336 [2021-06-05 10:46:24,863 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 10:46:24,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66570 ImplicationChecksByTransitivity, 9953.4ms TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-06-05 10:46:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 10:46:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2826. [2021-06-05 10:46:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2825 states have (on average 1.9858407079646017) internal successors, (5610), 2825 states have internal predecessors, (5610), 0 states have call successors, (0), 0 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 10:46:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 5610 transitions. [2021-06-05 10:46:24,928 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 5610 transitions. Word has length 133 [2021-06-05 10:46:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:24,928 INFO L482 AbstractCegarLoop]: Abstraction has 2826 states and 5610 transitions. [2021-06-05 10:46:24,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 5610 transitions. [2021-06-05 10:46:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-06-05 10:46:24,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:24,934 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 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 10:46:25,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:25,159 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:25,160 INFO L82 PathProgramCache]: Analyzing trace with hash 556479399, now seen corresponding path program 10 times [2021-06-05 10:46:25,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:25,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158374508] [2021-06-05 10:46:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-06-05 10:46:25,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:25,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158374508] [2021-06-05 10:46:25,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158374508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:25,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751692067] [2021-06-05 10:46:25,388 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 10:46:25,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:46:25,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 10:46:25,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-06-05 10:46:25,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751692067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:25,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:25,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 10:46:25,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972597716] [2021-06-05 10:46:25,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 10:46:25,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:25,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 10:46:25,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-05 10:46:25,750 INFO L87 Difference]: Start difference. First operand 2826 states and 5610 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 10:46:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:26,062 INFO L93 Difference]: Finished difference Result 3210 states and 6378 transitions. [2021-06-05 10:46:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 10:46:26,063 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-06-05 10:46:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:26,073 INFO L225 Difference]: With dead ends: 3210 [2021-06-05 10:46:26,073 INFO L226 Difference]: Without dead ends: 3210 [2021-06-05 10:46:26,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 350.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 10:46:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-06-05 10:46:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3066. [2021-06-05 10:46:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3065 states have (on average 1.9869494290375205) internal successors, (6090), 3065 states have internal predecessors, (6090), 0 states have call successors, (0), 0 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 10:46:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 6090 transitions. [2021-06-05 10:46:26,132 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 6090 transitions. Word has length 146 [2021-06-05 10:46:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:26,133 INFO L482 AbstractCegarLoop]: Abstraction has 3066 states and 6090 transitions. [2021-06-05 10:46:26,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 10:46:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 6090 transitions. [2021-06-05 10:46:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-06-05 10:46:26,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:26,139 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 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 10:46:26,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 10:46:26,363 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:26,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1605028246, now seen corresponding path program 11 times [2021-06-05 10:46:26,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:26,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560950117] [2021-06-05 10:46:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-06-05 10:46:26,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:26,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560950117] [2021-06-05 10:46:26,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560950117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:26,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50889320] [2021-06-05 10:46:26,574 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 10:46:26,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 10:46:26,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:26,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 10:46:26,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-06-05 10:46:27,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50889320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:27,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:27,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2021-06-05 10:46:27,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376864593] [2021-06-05 10:46:27,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 10:46:27,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 10:46:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 10:46:27,026 INFO L87 Difference]: Start difference. First operand 3066 states and 6090 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 10:46:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:46,728 INFO L93 Difference]: Finished difference Result 4444 states and 8846 transitions. [2021-06-05 10:46:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 545 states. [2021-06-05 10:46:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-06-05 10:46:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:46,741 INFO L225 Difference]: With dead ends: 4444 [2021-06-05 10:46:46,741 INFO L226 Difference]: Without dead ends: 4444 [2021-06-05 10:46:46,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151458 ImplicationChecksByTransitivity, 18829.9ms TimeCoverageRelationStatistics Valid=57699, Invalid=255341, Unknown=0, NotChecked=0, Total=313040 [2021-06-05 10:46:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2021-06-05 10:46:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3850. [2021-06-05 10:46:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 1.9896076903091713) internal successors, (7658), 3849 states have internal predecessors, (7658), 0 states have call successors, (0), 0 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 10:46:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 7658 transitions. [2021-06-05 10:46:46,824 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 7658 transitions. Word has length 151 [2021-06-05 10:46:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:46,825 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 7658 transitions. [2021-06-05 10:46:46,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 10:46:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 7658 transitions. [2021-06-05 10:46:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-06-05 10:46:46,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:46,833 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 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 10:46:47,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 10:46:47,057 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1225339166, now seen corresponding path program 12 times [2021-06-05 10:46:47,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:47,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853799244] [2021-06-05 10:46:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-06-05 10:46:47,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853799244] [2021-06-05 10:46:47,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853799244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482287058] [2021-06-05 10:46:47,294 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 10:46:47,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 10:46:47,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:47,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 10:46:47,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-06-05 10:46:47,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482287058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:47,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:47,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2021-06-05 10:46:47,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280958777] [2021-06-05 10:46:47,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 10:46:47,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:47,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 10:46:47,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 10:46:47,834 INFO L87 Difference]: Start difference. First operand 3850 states and 7658 transitions. Second operand has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 10:47:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:47:18,904 INFO L93 Difference]: Finished difference Result 5362 states and 10682 transitions. [2021-06-05 10:47:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 701 states. [2021-06-05 10:47:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-06-05 10:47:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:47:18,912 INFO L225 Difference]: With dead ends: 5362 [2021-06-05 10:47:18,912 INFO L226 Difference]: Without dead ends: 5362 [2021-06-05 10:47:18,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253004 ImplicationChecksByTransitivity, 29897.6ms TimeCoverageRelationStatistics Valid=92780, Invalid=422026, Unknown=0, NotChecked=0, Total=514806 [2021-06-05 10:47:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-06-05 10:47:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 4714. [2021-06-05 10:47:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 4713 states have (on average 1.991512836834288) internal successors, (9386), 4713 states have internal predecessors, (9386), 0 states have call successors, (0), 0 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 10:47:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 9386 transitions. [2021-06-05 10:47:19,001 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 9386 transitions. Word has length 164 [2021-06-05 10:47:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:47:19,002 INFO L482 AbstractCegarLoop]: Abstraction has 4714 states and 9386 transitions. [2021-06-05 10:47:19,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 10:47:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 9386 transitions. [2021-06-05 10:47:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-06-05 10:47:19,011 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:47:19,011 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 7, 7, 7, 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 10:47:19,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 10:47:19,225 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:47:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:47:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1616708884, now seen corresponding path program 13 times [2021-06-05 10:47:19,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:47:19,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52784287] [2021-06-05 10:47:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:47:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:47:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 10:47:19,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:47:19,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52784287] [2021-06-05 10:47:19,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52784287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:19,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445599902] [2021-06-05 10:47:19,497 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 10:47:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:47:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 10:47:19,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:47:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 10:47:19,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445599902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:19,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:47:19,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 10:47:19,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091752524] [2021-06-05 10:47:19,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 10:47:19,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:47:19,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 10:47:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-06-05 10:47:19,832 INFO L87 Difference]: Start difference. First operand 4714 states and 9386 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:47:20,237 INFO L93 Difference]: Finished difference Result 5226 states and 10410 transitions. [2021-06-05 10:47:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 10:47:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-06-05 10:47:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:47:20,245 INFO L225 Difference]: With dead ends: 5226 [2021-06-05 10:47:20,246 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 10:47:20,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 499.8ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 10:47:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 10:47:20,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5034. [2021-06-05 10:47:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 1.9920524538048878) internal successors, (10026), 5033 states have internal predecessors, (10026), 0 states have call successors, (0), 0 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 10:47:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 10026 transitions. [2021-06-05 10:47:20,325 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 10026 transitions. Word has length 177 [2021-06-05 10:47:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:47:20,325 INFO L482 AbstractCegarLoop]: Abstraction has 5034 states and 10026 transitions. [2021-06-05 10:47:20,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 10026 transitions. [2021-06-05 10:47:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-06-05 10:47:20,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:47:20,339 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 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 10:47:20,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:47:20,562 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:47:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:47:20,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1954781411, now seen corresponding path program 14 times [2021-06-05 10:47:20,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:47:20,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912413289] [2021-06-05 10:47:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:47:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:47:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 10:47:20,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:47:20,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912413289] [2021-06-05 10:47:20,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912413289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:20,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776977028] [2021-06-05 10:47:20,867 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 10:47:20,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:47:20,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:47:20,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 10:47:20,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:47:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 10:47:21,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776977028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:21,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:47:21,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 10:47:21,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757702568] [2021-06-05 10:47:21,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 10:47:21,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:47:21,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 10:47:21,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-05 10:47:21,218 INFO L87 Difference]: Start difference. First operand 5034 states and 10026 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:47:21,743 INFO L93 Difference]: Finished difference Result 5546 states and 11050 transitions. [2021-06-05 10:47:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 10:47:21,744 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-06-05 10:47:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:47:21,751 INFO L225 Difference]: With dead ends: 5546 [2021-06-05 10:47:21,752 INFO L226 Difference]: Without dead ends: 5546 [2021-06-05 10:47:21,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 575.4ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 10:47:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-06-05 10:47:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 5354. [2021-06-05 10:47:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 1.9925275546422567) internal successors, (10666), 5353 states have internal predecessors, (10666), 0 states have call successors, (0), 0 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 10:47:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 10666 transitions. [2021-06-05 10:47:21,823 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 10666 transitions. Word has length 182 [2021-06-05 10:47:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:47:21,824 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 10666 transitions. [2021-06-05 10:47:21,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 10666 transitions. [2021-06-05 10:47:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-06-05 10:47:21,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:47:21,833 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 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 10:47:22,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 10:47:22,058 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:47:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:47:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1102843508, now seen corresponding path program 15 times [2021-06-05 10:47:22,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:47:22,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239611982] [2021-06-05 10:47:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:47:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:47:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 10:47:22,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:47:22,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239611982] [2021-06-05 10:47:22,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239611982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:22,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660341232] [2021-06-05 10:47:22,465 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 10:47:22,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 10:47:22,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:47:22,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 10:47:22,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:47:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-06-05 10:47:23,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660341232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:23,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:47:23,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 46 [2021-06-05 10:47:23,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544830168] [2021-06-05 10:47:23,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-06-05 10:47:23,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:47:23,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-06-05 10:47:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1736, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 10:47:23,033 INFO L87 Difference]: Start difference. First operand 5354 states and 10666 transitions. Second operand has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 10:48:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:48:24,470 INFO L93 Difference]: Finished difference Result 7140 states and 14238 transitions. [2021-06-05 10:48:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2021-06-05 10:48:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have 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 10:48:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:48:24,479 INFO L225 Difference]: With dead ends: 7140 [2021-06-05 10:48:24,479 INFO L226 Difference]: Without dead ends: 7140 [2021-06-05 10:48:24,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2193 GetRequests, 1161 SyntacticMatches, 0 SemanticMatches, 1032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534325 ImplicationChecksByTransitivity, 59261.8ms TimeCoverageRelationStatistics Valid=187686, Invalid=880436, Unknown=0, NotChecked=0, Total=1068122 [2021-06-05 10:48:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-06-05 10:48:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6378. [2021-06-05 10:48:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6377 states have (on average 1.9937274580523758) internal successors, (12714), 6377 states have internal predecessors, (12714), 0 states have call successors, (0), 0 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 10:48:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 12714 transitions. [2021-06-05 10:48:24,623 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 12714 transitions. Word has length 187 [2021-06-05 10:48:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:48:24,623 INFO L482 AbstractCegarLoop]: Abstraction has 6378 states and 12714 transitions. [2021-06-05 10:48:24,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 10:48:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 12714 transitions. [2021-06-05 10:48:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 10:48:24,634 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:48:24,635 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 8, 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 10:48:24,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 10:48:24,857 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:48:24,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:48:24,857 INFO L82 PathProgramCache]: Analyzing trace with hash 493157464, now seen corresponding path program 16 times [2021-06-05 10:48:24,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:48:24,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202066104] [2021-06-05 10:48:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:48:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:48:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 10:48:25,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:48:25,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202066104] [2021-06-05 10:48:25,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202066104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:25,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347188564] [2021-06-05 10:48:25,254 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 10:48:25,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:48:25,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:48:25,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 10:48:25,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:48:25,633 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-06-05 10:48:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 10:48:25,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347188564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:25,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:48:25,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-05 10:48:25,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934753811] [2021-06-05 10:48:25,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 10:48:25,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:48:25,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 10:48:25,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 10:48:25,787 INFO L87 Difference]: Start difference. First operand 6378 states and 12714 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 10:48:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:48:26,384 INFO L93 Difference]: Finished difference Result 6954 states and 13866 transitions. [2021-06-05 10:48:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 10:48:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 10:48:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:48:26,395 INFO L225 Difference]: With dead ends: 6954 [2021-06-05 10:48:26,396 INFO L226 Difference]: Without dead ends: 6954 [2021-06-05 10:48:26,396 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 772.8ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 10:48:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2021-06-05 10:48:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6738. [2021-06-05 10:48:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.9940626391568947) internal successors, (13434), 6737 states have internal predecessors, (13434), 0 states have call successors, (0), 0 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 10:48:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 13434 transitions. [2021-06-05 10:48:26,491 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 13434 transitions. Word has length 200 [2021-06-05 10:48:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:48:26,491 INFO L482 AbstractCegarLoop]: Abstraction has 6738 states and 13434 transitions. [2021-06-05 10:48:26,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 10:48:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 13434 transitions. [2021-06-05 10:48:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-06-05 10:48:26,507 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:48:26,507 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 8, 8, 8, 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 10:48:26,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:48:26,721 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:48:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:48:26,721 INFO L82 PathProgramCache]: Analyzing trace with hash -771856121, now seen corresponding path program 17 times [2021-06-05 10:48:26,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:48:26,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016895129] [2021-06-05 10:48:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:48:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:48:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 10:48:27,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:48:27,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016895129] [2021-06-05 10:48:27,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016895129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:27,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595137498] [2021-06-05 10:48:27,184 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 10:48:27,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 10:48:27,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:48:27,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 10:48:27,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:48:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-06-05 10:48:27,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595137498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:27,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:48:27,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19] total 52 [2021-06-05 10:48:27,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611977279] [2021-06-05 10:48:27,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-05 10:48:27,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:48:27,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-05 10:48:27,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 10:48:27,849 INFO L87 Difference]: Start difference. First operand 6738 states and 13434 transitions. Second operand has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:07,065 INFO L93 Difference]: Finished difference Result 8728 states and 17414 transitions. [2021-06-05 10:50:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1301 states. [2021-06-05 10:50:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-06-05 10:50:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:07,073 INFO L225 Difference]: With dead ends: 8728 [2021-06-05 10:50:07,073 INFO L226 Difference]: Without dead ends: 8728 [2021-06-05 10:50:07,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2785 GetRequests, 1462 SyntacticMatches, 0 SemanticMatches, 1323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886582 ImplicationChecksByTransitivity, 95795.3ms TimeCoverageRelationStatistics Valid=303321, Invalid=1450979, Unknown=0, NotChecked=0, Total=1754300 [2021-06-05 10:50:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2021-06-05 10:50:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 7882. [2021-06-05 10:50:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7882 states, 7881 states have (on average 1.9949245019667554) internal successors, (15722), 7881 states have internal predecessors, (15722), 0 states have call successors, (0), 0 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 10:50:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7882 states to 7882 states and 15722 transitions. [2021-06-05 10:50:07,354 INFO L78 Accepts]: Start accepts. Automaton has 7882 states and 15722 transitions. Word has length 205 [2021-06-05 10:50:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:07,356 INFO L482 AbstractCegarLoop]: Abstraction has 7882 states and 15722 transitions. [2021-06-05 10:50:07,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 7882 states and 15722 transitions. [2021-06-05 10:50:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-06-05 10:50:07,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:07,370 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:07,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:07,593 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash -522613101, now seen corresponding path program 18 times [2021-06-05 10:50:07,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:07,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709511905] [2021-06-05 10:50:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-06-05 10:50:08,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:08,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709511905] [2021-06-05 10:50:08,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709511905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:08,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834417446] [2021-06-05 10:50:08,328 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 10:50:08,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-06-05 10:50:08,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 10:50:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-06-05 10:50:09,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834417446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:09,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:09,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 21] total 56 [2021-06-05 10:50:09,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176494194] [2021-06-05 10:50:09,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-06-05 10:50:09,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:09,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-06-05 10:50:09,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2601, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 10:50:09,248 INFO L87 Difference]: Start difference. First operand 7882 states and 15722 transitions. Second operand has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:18,308 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-06-05 10:52:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:52:27,129 INFO L93 Difference]: Finished difference Result 10006 states and 19970 transitions. [2021-06-05 10:52:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1538 states. [2021-06-05 10:52:27,129 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-06-05 10:52:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:52:27,136 INFO L225 Difference]: With dead ends: 10006 [2021-06-05 10:52:27,137 INFO L226 Difference]: Without dead ends: 10006 [2021-06-05 10:52:27,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3270 GetRequests, 1708 SyntacticMatches, 0 SemanticMatches, 1562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243135 ImplicationChecksByTransitivity, 133282.1ms TimeCoverageRelationStatistics Valid=418136, Invalid=2026396, Unknown=0, NotChecked=0, Total=2444532 [2021-06-05 10:52:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2021-06-05 10:52:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 9106. [2021-06-05 10:52:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9106 states, 9105 states have (on average 1.9956068094453596) internal successors, (18170), 9105 states have internal predecessors, (18170), 0 states have call successors, (0), 0 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 10:52:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 18170 transitions. [2021-06-05 10:52:27,357 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 18170 transitions. Word has length 218 [2021-06-05 10:52:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:52:27,357 INFO L482 AbstractCegarLoop]: Abstraction has 9106 states and 18170 transitions. [2021-06-05 10:52:27,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 18170 transitions. [2021-06-05 10:52:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-06-05 10:52:27,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:52:27,373 INFO L521 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:27,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:52:27,589 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:52:27,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:52:27,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1286709155, now seen corresponding path program 19 times [2021-06-05 10:52:27,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:52:27,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935212754] [2021-06-05 10:52:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:52:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 10:52:28,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:52:28,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935212754] [2021-06-05 10:52:28,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935212754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:28,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106413952] [2021-06-05 10:52:28,121 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 10:52:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:28,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 10:52:28,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:52:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 10:52:28,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106413952] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:28,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:52:28,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-06-05 10:52:28,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013073389] [2021-06-05 10:52:28,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 10:52:28,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:52:28,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 10:52:28,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 10:52:28,592 INFO L87 Difference]: Start difference. First operand 9106 states and 18170 transitions. Second operand has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:52:29,385 INFO L93 Difference]: Finished difference Result 9810 states and 19578 transitions. [2021-06-05 10:52:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 10:52:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-06-05 10:52:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:52:29,394 INFO L225 Difference]: With dead ends: 9810 [2021-06-05 10:52:29,394 INFO L226 Difference]: Without dead ends: 9810 [2021-06-05 10:52:29,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1048.8ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 10:52:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2021-06-05 10:52:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9546. [2021-06-05 10:52:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9546 states, 9545 states have (on average 1.995809324253536) internal successors, (19050), 9545 states have internal predecessors, (19050), 0 states have call successors, (0), 0 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 10:52:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9546 states to 9546 states and 19050 transitions. [2021-06-05 10:52:29,511 INFO L78 Accepts]: Start accepts. Automaton has 9546 states and 19050 transitions. Word has length 231 [2021-06-05 10:52:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:52:29,511 INFO L482 AbstractCegarLoop]: Abstraction has 9546 states and 19050 transitions. [2021-06-05 10:52:29,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 9546 states and 19050 transitions. [2021-06-05 10:52:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-06-05 10:52:29,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:52:29,524 INFO L521 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:29,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-05 10:52:29,732 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:52:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:52:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash 528686542, now seen corresponding path program 20 times [2021-06-05 10:52:29,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:52:29,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282215151] [2021-06-05 10:52:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:52:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 10:52:30,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:52:30,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282215151] [2021-06-05 10:52:30,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282215151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:30,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818282450] [2021-06-05 10:52:30,495 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 10:52:30,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:52:30,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:52:30,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 10:52:30,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:52:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 10:52:30,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818282450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:30,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:52:30,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-06-05 10:52:30,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378485112] [2021-06-05 10:52:30,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-06-05 10:52:30,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:52:30,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-06-05 10:52:30,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 10:52:30,875 INFO L87 Difference]: Start difference. First operand 9546 states and 19050 transitions. Second operand has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 10:52:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:52:31,744 INFO L93 Difference]: Finished difference Result 9986 states and 19930 transitions. [2021-06-05 10:52:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 10:52:31,745 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2021-06-05 10:52:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:52:31,753 INFO L225 Difference]: With dead ends: 9986 [2021-06-05 10:52:31,753 INFO L226 Difference]: Without dead ends: 9986 [2021-06-05 10:52:31,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1321.7ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 10:52:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2021-06-05 10:52:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2021-06-05 10:52:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.9959939909864797) internal successors, (19930), 9985 states have internal predecessors, (19930), 0 states have call successors, (0), 0 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 10:52:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 19930 transitions. [2021-06-05 10:52:31,850 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 19930 transitions. Word has length 236 [2021-06-05 10:52:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:52:31,850 INFO L482 AbstractCegarLoop]: Abstraction has 9986 states and 19930 transitions. [2021-06-05 10:52:31,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 10:52:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 19930 transitions. [2021-06-05 10:52:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-06-05 10:52:31,863 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:52:31,863 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:32,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 10:52:32,073 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:52:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:52:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2022711037, now seen corresponding path program 21 times [2021-06-05 10:52:32,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:52:32,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788704107] [2021-06-05 10:52:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:52:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:52:32,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:52:32,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788704107] [2021-06-05 10:52:32,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788704107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:32,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322232638] [2021-06-05 10:52:32,833 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 10:52:32,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 10:52:32,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:52:32,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 10:52:32,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:52:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-06-05 10:52:33,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322232638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:33,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:52:33,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 23] total 67 [2021-06-05 10:52:33,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914803778] [2021-06-05 10:52:33,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-06-05 10:52:33,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:52:33,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-06-05 10:52:33,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=3671, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 10:52:33,791 INFO L87 Difference]: Start difference. First operand 9986 states and 19930 transitions. Second operand has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 10:53:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:53:43,197 INFO L93 Difference]: Finished difference Result 170472 states and 340902 transitions. [2021-06-05 10:53:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1102 states. [2021-06-05 10:53:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-06-05 10:53:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:53:43,358 INFO L225 Difference]: With dead ends: 170472 [2021-06-05 10:53:43,358 INFO L226 Difference]: Without dead ends: 170472 [2021-06-05 10:53:43,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 1123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635937 ImplicationChecksByTransitivity, 61747.6ms TimeCoverageRelationStatistics Valid=255553, Invalid=1008947, Unknown=0, NotChecked=0, Total=1264500 [2021-06-05 10:53:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170472 states. [2021-06-05 10:53:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170472 to 10890. [2021-06-05 10:53:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10890 states, 10889 states have (on average 1.9963265680962439) internal successors, (21738), 10889 states have internal predecessors, (21738), 0 states have call successors, (0), 0 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 10:53:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10890 states to 10890 states and 21738 transitions. [2021-06-05 10:53:44,252 INFO L78 Accepts]: Start accepts. Automaton has 10890 states and 21738 transitions. Word has length 241 [2021-06-05 10:53:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:53:44,253 INFO L482 AbstractCegarLoop]: Abstraction has 10890 states and 21738 transitions. [2021-06-05 10:53:44,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 10:53:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10890 states and 21738 transitions. [2021-06-05 10:53:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-06-05 10:53:44,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:53:44,267 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:53:44,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:53:44,481 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:53:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:53:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash -17430824, now seen corresponding path program 22 times [2021-06-05 10:53:44,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:53:44,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202098871] [2021-06-05 10:53:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:53:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:53:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 1421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:53:45,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:53:45,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202098871] [2021-06-05 10:53:45,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202098871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:53:45,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696064846] [2021-06-05 10:53:45,280 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:53:45,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:53:45,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:53:45,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 10:53:45,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:53:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-06-05 10:53:46,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696064846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:53:46,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:53:46,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 25] total 71 [2021-06-05 10:53:46,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681134727] [2021-06-05 10:53:46,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:53:46,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:53:46,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:53:46,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=4148, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:53:46,359 INFO L87 Difference]: Start difference. First operand 10890 states and 21738 transitions. Second operand has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 10:55:12,017 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-05 10:55:26,302 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 10:55:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:55:34,103 INFO L93 Difference]: Finished difference Result 211585 states and 423128 transitions. [2021-06-05 10:55:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1363 states. [2021-06-05 10:55:34,103 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2021-06-05 10:55:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:55:34,314 INFO L225 Difference]: With dead ends: 211585 [2021-06-05 10:55:34,314 INFO L226 Difference]: Without dead ends: 211585 [2021-06-05 10:55:34,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2928 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 1386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983344 ImplicationChecksByTransitivity, 94833.7ms TimeCoverageRelationStatistics Valid=390931, Invalid=1534225, Unknown=0, NotChecked=0, Total=1925156 [2021-06-05 10:55:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211585 states. [2021-06-05 10:55:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211585 to 11794. [2021-06-05 10:55:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 11793 states have (on average 1.9966081573814976) internal successors, (23546), 11793 states have internal predecessors, (23546), 0 states have call successors, (0), 0 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 10:55:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 23546 transitions. [2021-06-05 10:55:35,378 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 23546 transitions. Word has length 249 [2021-06-05 10:55:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:55:35,379 INFO L482 AbstractCegarLoop]: Abstraction has 11794 states and 23546 transitions. [2021-06-05 10:55:35,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 10:55:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 23546 transitions. [2021-06-05 10:55:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-06-05 10:55:35,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:55:35,392 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:35,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 10:55:35,607 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:55:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:55:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash -418389069, now seen corresponding path program 23 times [2021-06-05 10:55:35,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:55:35,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033283663] [2021-06-05 10:55:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:55:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:55:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:55:36,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:55:36,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033283663] [2021-06-05 10:55:36,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033283663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:36,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519102138] [2021-06-05 10:55:36,659 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:55:36,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-06-05 10:55:36,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:55:36,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 10:55:36,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:55:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-06-05 10:55:37,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519102138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:37,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:55:37,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 27] total 75 [2021-06-05 10:55:37,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065462348] [2021-06-05 10:55:37,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-06-05 10:55:37,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:55:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-06-05 10:55:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=4653, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 10:55:37,874 INFO L87 Difference]: Start difference. First operand 11794 states and 23546 transitions. Second operand has 75 states, 75 states have (on average 5.346666666666667) internal successors, (401), 75 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 10:55:38,035 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 Received shutdown request... [2021-06-05 10:57:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1302 states. [2021-06-05 10:57:41,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:57:41,565 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 10:57:41,566 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:57:41,568 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 10:57:41,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:57:41 BasicIcfg [2021-06-05 10:57:41,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:57:41,568 INFO L168 Benchmark]: Toolchain (without parser) took 701779.31 ms. Allocated memory was 364.9 MB in the beginning and 4.7 GB in the end (delta: 4.4 GB). Free memory was 326.7 MB in the beginning and 2.6 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.0 GB. [2021-06-05 10:57:41,568 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 364.9 MB. Free memory was 345.6 MB in the beginning and 345.6 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:57:41,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 883.51 ms. Allocated memory is still 364.9 MB. Free memory was 326.5 MB in the beginning and 275.2 MB in the end (delta: 51.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:41,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.20 ms. Allocated memory is still 364.9 MB. Free memory was 275.2 MB in the beginning and 272.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:41,568 INFO L168 Benchmark]: Boogie Preprocessor took 42.64 ms. Allocated memory is still 364.9 MB. Free memory was 272.2 MB in the beginning and 271.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:41,569 INFO L168 Benchmark]: RCFGBuilder took 442.55 ms. Allocated memory is still 364.9 MB. Free memory was 271.0 MB in the beginning and 242.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:41,569 INFO L168 Benchmark]: TraceAbstraction took 700340.08 ms. Allocated memory was 364.9 MB in the beginning and 4.7 GB in the end (delta: 4.4 GB). Free memory was 242.4 MB in the beginning and 2.6 GB in the end (delta: -2.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. [2021-06-05 10:57:41,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 364.9 MB. Free memory was 345.6 MB in the beginning and 345.6 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 883.51 ms. Allocated memory is still 364.9 MB. Free memory was 326.5 MB in the beginning and 275.2 MB in the end (delta: 51.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 63.20 ms. Allocated memory is still 364.9 MB. Free memory was 275.2 MB in the beginning and 272.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 42.64 ms. Allocated memory is still 364.9 MB. Free memory was 272.2 MB in the beginning and 271.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 442.55 ms. Allocated memory is still 364.9 MB. Free memory was 271.0 MB in the beginning and 242.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 700340.08 ms. Allocated memory was 364.9 MB in the beginning and 4.7 GB in the end (delta: 4.4 GB). Free memory was 242.4 MB in the beginning and 2.6 GB in the end (delta: -2.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1336]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11794states) and FLOYD_HOARE automaton (currently 1302 states, 75 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1349 known predicates. - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11794states) and FLOYD_HOARE automaton (currently 1302 states, 75 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1349 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 700257.5ms, OverallIterations: 26, TraceHistogramMax: 20, EmptinessCheckTime: 217.4ms, AutomataDifference: 670309.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2758 SDtfs, 165002 SDslu, 44105 SDs, 0 SdLazy, 8099 SolverSat, 29379 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14083.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23257 GetRequests, 13100 SyntacticMatches, 0 SemanticMatches, 10156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5728664 ImplicationChecksByTransitivity, 624767.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11794occurred in iteration=25, InterpolantAutomatonStates: 8549, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3251.9ms AutomataMinimizationTime, 25 MinimizatonAttempts, 366090 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 581.8ms SsaConstructionTime, 1744.9ms SatisfiabilityAnalysisTime, 16989.1ms InterpolantComputationTime, 7820 NumberOfCodeBlocks, 7715 NumberOfCodeBlocksAsserted, 164 NumberOfCheckSat, 7770 ConstructedInterpolants, 0 QuantifiedInterpolants, 13495 SizeOfPredicates, 370 NumberOfNonLiveVariables, 7996 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 50 InterpolantComputations, 3 PerfectInterpolantSequences, 9574/25480 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