/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 15:28:48,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 15:28:48,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 15:28:48,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 15:28:48,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 15:28:48,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 15:28:48,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 15:28:48,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 15:28:48,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 15:28:48,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 15:28:48,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 15:28:48,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 15:28:48,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 15:28:48,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 15:28:48,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 15:28:48,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 15:28:48,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 15:28:48,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 15:28:48,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 15:28:48,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 15:28:48,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 15:28:48,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 15:28:48,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 15:28:48,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 15:28:48,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 15:28:48,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 15:28:48,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 15:28:48,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 15:28:48,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 15:28:48,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 15:28:48,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 15:28:48,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 15:28:48,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 15:28:48,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 15:28:48,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 15:28:48,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 15:28:48,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 15:28:48,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 15:28:48,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 15:28:48,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 15:28:48,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 15:28:48,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 15:28:48,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 15:28:48,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 15:28:48,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 15:28:48,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 15:28:48,807 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 15:28:48,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 15:28:48,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 15:28:48,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 15:28:48,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 15:28:48,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 15:28:48,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 15:28:48,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 15:28:48,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 15:28:48,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 15:28:48,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 15:28:48,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 15:28:48,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 15:28:48,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 15:28:48,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 15:28:48,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 15:28:48,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 15:28:48,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 15:28:48,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 15:28:48,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 15:28:48,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 15:28:48,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 15:28:48,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 15:28:48,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 15:28:48,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 15:28:48,816 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 15:28:48,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 15:28:49,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 15:28:49,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 15:28:49,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 15:28:49,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 15:28:49,304 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 15:28:49,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-01-20 15:28:49,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab02b256/98b59a9965674cab93a70a23bad2646a/FLAGdacd74a69 [2021-01-20 15:28:50,183 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 15:28:50,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-01-20 15:28:50,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab02b256/98b59a9965674cab93a70a23bad2646a/FLAGdacd74a69 [2021-01-20 15:28:50,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab02b256/98b59a9965674cab93a70a23bad2646a [2021-01-20 15:28:50,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 15:28:50,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 15:28:50,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 15:28:50,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 15:28:50,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 15:28:50,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 03:28:50" (1/1) ... [2021-01-20 15:28:50,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5c8cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:50, skipping insertion in model container [2021-01-20 15:28:50,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 03:28:50" (1/1) ... [2021-01-20 15:28:50,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 15:28:50,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 15:28:51,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 15:28:51,234 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 15:28:51,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 15:28:51,666 INFO L208 MainTranslator]: Completed translation [2021-01-20 15:28:51,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51 WrapperNode [2021-01-20 15:28:51,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 15:28:51,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 15:28:51,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 15:28:51,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 15:28:51,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 15:28:51,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 15:28:51,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 15:28:51,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 15:28:51,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (1/1) ... [2021-01-20 15:28:51,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 15:28:51,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 15:28:51,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 15:28:51,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 15:28:51,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (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 [2021-01-20 15:28:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 15:28:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 15:28:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-20 15:28:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 15:28:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-20 15:28:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2021-01-20 15:28:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2021-01-20 15:28:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 15:28:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 15:28:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 15:28:51,887 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 15:28:52,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 15:28:52,402 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 15:28:52,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 03:28:52 BoogieIcfgContainer [2021-01-20 15:28:52,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 15:28:52,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 15:28:52,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 15:28:52,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 15:28:52,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 03:28:50" (1/3) ... [2021-01-20 15:28:52,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34305d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 03:28:52, skipping insertion in model container [2021-01-20 15:28:52,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:51" (2/3) ... [2021-01-20 15:28:52,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34305d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 03:28:52, skipping insertion in model container [2021-01-20 15:28:52,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 03:28:52" (3/3) ... [2021-01-20 15:28:52,414 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2021-01-20 15:28:52,430 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 15:28:52,431 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 15:28:52,435 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 15:28:52,436 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 15:28:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,469 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,469 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,470 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,470 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,471 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,471 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,471 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,472 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,472 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,472 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,472 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,473 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,473 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,473 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,474 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,474 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,474 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,474 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,475 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,475 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,475 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,476 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,476 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,476 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,476 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,477 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,477 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,477 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,477 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,478 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,478 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,478 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,479 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,479 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,479 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,479 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,480 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,480 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,480 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,480 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,481 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,481 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,483 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,484 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,484 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,484 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,485 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,485 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,486 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:52,499 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-20 15:28:52,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-20 15:28:52,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 15:28:52,537 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 15:28:52,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 15:28:52,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 15:28:52,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 15:28:52,538 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 15:28:52,538 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 15:28:52,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 15:28:52,551 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 90 transitions, 188 flow [2021-01-20 15:28:52,580 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 15:28:52,601 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:52,602 INFO L504 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] [2021-01-20 15:28:52,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash 418508673, now seen corresponding path program 1 times [2021-01-20 15:28:52,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:52,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833078780] [2021-01-20 15:28:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 15:28:52,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833078780] [2021-01-20 15:28:52,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 15:28:52,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 15:28:52,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991184379] [2021-01-20 15:28:52,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-20 15:28:52,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-20 15:28:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 15:28:52,962 INFO L87 Difference]: Start difference. First operand has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:52,990 INFO L93 Difference]: Finished difference Result 311 states and 581 transitions. [2021-01-20 15:28:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-20 15:28:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-01-20 15:28:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:53,008 INFO L225 Difference]: With dead ends: 311 [2021-01-20 15:28:53,008 INFO L226 Difference]: Without dead ends: 274 [2021-01-20 15:28:53,010 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 15:28:53,010 INFO L78 Accepts]: Start accepts. Automaton has 274 states. Word has length 52 [2021-01-20 15:28:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:53,012 INFO L481 AbstractCegarLoop]: Abstraction has 274 states. [2021-01-20 15:28:53,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-01-20 15:28:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 15:28:53,019 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:53,020 INFO L504 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] [2021-01-20 15:28:53,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 15:28:53,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1420501857, now seen corresponding path program 1 times [2021-01-20 15:28:53,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:53,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120971892] [2021-01-20 15:28:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 15:28:53,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120971892] [2021-01-20 15:28:53,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 15:28:53,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 15:28:53,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019055536] [2021-01-20 15:28:53,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 15:28:53,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:53,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 15:28:53,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 15:28:53,240 INFO L87 Difference]: Start difference. First operand 274 states. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:53,313 INFO L93 Difference]: Finished difference Result 404 states and 768 transitions. [2021-01-20 15:28:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 15:28:53,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-01-20 15:28:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:53,322 INFO L225 Difference]: With dead ends: 404 [2021-01-20 15:28:53,322 INFO L226 Difference]: Without dead ends: 404 [2021-01-20 15:28:53,323 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 15:28:53,324 INFO L78 Accepts]: Start accepts. Automaton has 404 states. Word has length 52 [2021-01-20 15:28:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:53,324 INFO L481 AbstractCegarLoop]: Abstraction has 404 states. [2021-01-20 15:28:53,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:53,325 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2021-01-20 15:28:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-20 15:28:53,329 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:53,330 INFO L504 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] [2021-01-20 15:28:53,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 15:28:53,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:53,332 INFO L82 PathProgramCache]: Analyzing trace with hash 255348339, now seen corresponding path program 1 times [2021-01-20 15:28:53,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:53,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325065929] [2021-01-20 15:28:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 15:28:53,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325065929] [2021-01-20 15:28:53,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 15:28:53,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 15:28:53,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650824700] [2021-01-20 15:28:53,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 15:28:53,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:53,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 15:28:53,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 15:28:53,497 INFO L87 Difference]: Start difference. First operand 404 states. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:53,530 INFO L93 Difference]: Finished difference Result 600 states and 1160 transitions. [2021-01-20 15:28:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 15:28:53,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-01-20 15:28:53,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:53,536 INFO L225 Difference]: With dead ends: 600 [2021-01-20 15:28:53,537 INFO L226 Difference]: Without dead ends: 600 [2021-01-20 15:28:53,537 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 15:28:53,537 INFO L78 Accepts]: Start accepts. Automaton has 600 states. Word has length 63 [2021-01-20 15:28:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:53,538 INFO L481 AbstractCegarLoop]: Abstraction has 600 states. [2021-01-20 15:28:53,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states. [2021-01-20 15:28:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 15:28:53,542 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:53,543 INFO L504 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] [2021-01-20 15:28:53,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 15:28:53,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1925948387, now seen corresponding path program 1 times [2021-01-20 15:28:53,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:53,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748453758] [2021-01-20 15:28:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 15:28:53,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748453758] [2021-01-20 15:28:53,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516014775] [2021-01-20 15:28:53,652 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 [2021-01-20 15:28:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:53,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 15:28:53,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 15:28:54,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:54,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-20 15:28:54,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119841284] [2021-01-20 15:28:54,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 15:28:54,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 15:28:54,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-20 15:28:54,046 INFO L87 Difference]: Start difference. First operand 600 states. 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) [2021-01-20 15:28:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:54,155 INFO L93 Difference]: Finished difference Result 820 states and 1600 transitions. [2021-01-20 15:28:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 15:28:54,156 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 71 [2021-01-20 15:28:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:54,162 INFO L225 Difference]: With dead ends: 820 [2021-01-20 15:28:54,162 INFO L226 Difference]: Without dead ends: 820 [2021-01-20 15:28:54,163 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-20 15:28:54,163 INFO L78 Accepts]: Start accepts. Automaton has 820 states. Word has length 71 [2021-01-20 15:28:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:54,164 INFO L481 AbstractCegarLoop]: Abstraction has 820 states. [2021-01-20 15:28:54,164 INFO L482 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) [2021-01-20 15:28:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states. [2021-01-20 15:28:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-20 15:28:54,169 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:54,169 INFO L504 BasicCegarLoop]: trace histogram [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] [2021-01-20 15:28:54,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:28:54,385 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:54,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:54,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1527926795, now seen corresponding path program 2 times [2021-01-20 15:28:54,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:54,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161095765] [2021-01-20 15:28:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-20 15:28:54,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161095765] [2021-01-20 15:28:54,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91216474] [2021-01-20 15:28:54,500 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 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 [2021-01-20 15:28:54,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 15:28:54,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:28:54,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 15:28:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-20 15:28:54,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:54,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-20 15:28:54,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135855315] [2021-01-20 15:28:54,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 15:28:54,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:54,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 15:28:54,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-20 15:28:54,768 INFO L87 Difference]: Start difference. First operand 820 states. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:54,864 INFO L93 Difference]: Finished difference Result 1132 states and 2224 transitions. [2021-01-20 15:28:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 15:28:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-01-20 15:28:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:54,872 INFO L225 Difference]: With dead ends: 1132 [2021-01-20 15:28:54,873 INFO L226 Difference]: Without dead ends: 1132 [2021-01-20 15:28:54,873 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-20 15:28:54,873 INFO L78 Accepts]: Start accepts. Automaton has 1132 states. Word has length 82 [2021-01-20 15:28:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:54,874 INFO L481 AbstractCegarLoop]: Abstraction has 1132 states. [2021-01-20 15:28:54,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states. [2021-01-20 15:28:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-01-20 15:28:54,879 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:54,879 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-01-20 15:28:55,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:28:55,093 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash 126749173, now seen corresponding path program 3 times [2021-01-20 15:28:55,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:55,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471580019] [2021-01-20 15:28:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-20 15:28:55,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471580019] [2021-01-20 15:28:55,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155029190] [2021-01-20 15:28:55,221 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 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 [2021-01-20 15:28:55,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-20 15:28:55,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:28:55,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-20 15:28:55,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-20 15:28:55,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:55,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-01-20 15:28:55,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518420970] [2021-01-20 15:28:55,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 15:28:55,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 15:28:55,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-20 15:28:55,557 INFO L87 Difference]: Start difference. First operand 1132 states. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:57,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:57,225 INFO L93 Difference]: Finished difference Result 1840 states and 3640 transitions. [2021-01-20 15:28:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-20 15:28:57,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 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 90 [2021-01-20 15:28:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:57,237 INFO L225 Difference]: With dead ends: 1840 [2021-01-20 15:28:57,237 INFO L226 Difference]: Without dead ends: 1840 [2021-01-20 15:28:57,239 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-01-20 15:28:57,240 INFO L78 Accepts]: Start accepts. Automaton has 1840 states. Word has length 90 [2021-01-20 15:28:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:57,240 INFO L481 AbstractCegarLoop]: Abstraction has 1840 states. [2021-01-20 15:28:57,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:28:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states. [2021-01-20 15:28:57,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-20 15:28:57,246 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:57,246 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-01-20 15:28:57,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:28:57,460 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1071300303, now seen corresponding path program 4 times [2021-01-20 15:28:57,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:57,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815353856] [2021-01-20 15:28:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-20 15:28:57,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815353856] [2021-01-20 15:28:57,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687247752] [2021-01-20 15:28:57,633 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 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 [2021-01-20 15:28:57,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 15:28:57,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:28:57,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 15:28:57,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-20 15:28:57,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:57,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-20 15:28:57,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531528274] [2021-01-20 15:28:57,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 15:28:57,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 15:28:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-20 15:28:57,798 INFO L87 Difference]: Start difference. First operand 1840 states. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2021-01-20 15:28:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:57,922 INFO L93 Difference]: Finished difference Result 2236 states and 4432 transitions. [2021-01-20 15:28:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 15:28:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 109 [2021-01-20 15:28:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:57,936 INFO L225 Difference]: With dead ends: 2236 [2021-01-20 15:28:57,936 INFO L226 Difference]: Without dead ends: 2236 [2021-01-20 15:28:57,937 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-01-20 15:28:57,937 INFO L78 Accepts]: Start accepts. Automaton has 2236 states. Word has length 109 [2021-01-20 15:28:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:57,937 INFO L481 AbstractCegarLoop]: Abstraction has 2236 states. [2021-01-20 15:28:57,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2021-01-20 15:28:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states. [2021-01-20 15:28:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-20 15:28:57,945 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:57,945 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2021-01-20 15:28:58,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:28:58,158 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash 165335711, now seen corresponding path program 5 times [2021-01-20 15:28:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:58,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159998948] [2021-01-20 15:28:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-20 15:28:58,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159998948] [2021-01-20 15:28:58,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991929400] [2021-01-20 15:28:58,367 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 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 [2021-01-20 15:28:58,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 15:28:58,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:28:58,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 15:28:58,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-01-20 15:28:58,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:58,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-01-20 15:28:58,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601904351] [2021-01-20 15:28:58,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 15:28:58,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 15:28:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-01-20 15:28:58,642 INFO L87 Difference]: Start difference. First operand 2236 states. Second operand has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:03,244 INFO L93 Difference]: Finished difference Result 3208 states and 6376 transitions. [2021-01-20 15:29:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-01-20 15:29:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-01-20 15:29:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:03,263 INFO L225 Difference]: With dead ends: 3208 [2021-01-20 15:29:03,263 INFO L226 Difference]: Without dead ends: 3208 [2021-01-20 15:29:03,275 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11273 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2021-01-20 15:29:03,275 INFO L78 Accepts]: Start accepts. Automaton has 3208 states. Word has length 120 [2021-01-20 15:29:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:03,276 INFO L481 AbstractCegarLoop]: Abstraction has 3208 states. [2021-01-20 15:29:03,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states. [2021-01-20 15:29:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-01-20 15:29:03,285 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:03,286 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-01-20 15:29:03,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:03,500 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1067080613, now seen corresponding path program 6 times [2021-01-20 15:29:03,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:03,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677147046] [2021-01-20 15:29:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:03,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677147046] [2021-01-20 15:29:03,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224147783] [2021-01-20 15:29:03,766 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 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 [2021-01-20 15:29:03,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-20 15:29:03,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:03,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 15:29:03,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:04,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:04,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 15:29:04,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186740734] [2021-01-20 15:29:04,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 15:29:04,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:04,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 15:29:04,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-20 15:29:04,060 INFO L87 Difference]: Start difference. First operand 3208 states. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:04,303 INFO L93 Difference]: Finished difference Result 3692 states and 7344 transitions. [2021-01-20 15:29:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 15:29:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 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 139 [2021-01-20 15:29:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:04,324 INFO L225 Difference]: With dead ends: 3692 [2021-01-20 15:29:04,324 INFO L226 Difference]: Without dead ends: 3692 [2021-01-20 15:29:04,324 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-01-20 15:29:04,325 INFO L78 Accepts]: Start accepts. Automaton has 3692 states. Word has length 139 [2021-01-20 15:29:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:04,325 INFO L481 AbstractCegarLoop]: Abstraction has 3692 states. [2021-01-20 15:29:04,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states. [2021-01-20 15:29:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-20 15:29:04,336 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:04,337 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2021-01-20 15:29:04,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:04,551 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1261600439, now seen corresponding path program 7 times [2021-01-20 15:29:04,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:04,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247577279] [2021-01-20 15:29:04,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:04,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247577279] [2021-01-20 15:29:04,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14887449] [2021-01-20 15:29:04,891 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 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 [2021-01-20 15:29:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:05,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 15:29:05,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:05,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:05,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 15:29:05,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955449398] [2021-01-20 15:29:05,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 15:29:05,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:05,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 15:29:05,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-20 15:29:05,157 INFO L87 Difference]: Start difference. First operand 3692 states. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:05,419 INFO L93 Difference]: Finished difference Result 4176 states and 8312 transitions. [2021-01-20 15:29:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 15:29:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 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 150 [2021-01-20 15:29:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:05,442 INFO L225 Difference]: With dead ends: 4176 [2021-01-20 15:29:05,442 INFO L226 Difference]: Without dead ends: 4176 [2021-01-20 15:29:05,444 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-01-20 15:29:05,444 INFO L78 Accepts]: Start accepts. Automaton has 4176 states. Word has length 150 [2021-01-20 15:29:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:05,444 INFO L481 AbstractCegarLoop]: Abstraction has 4176 states. [2021-01-20 15:29:05,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states. [2021-01-20 15:29:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-01-20 15:29:05,457 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:05,458 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 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] [2021-01-20 15:29:05,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-20 15:29:05,671 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1689525349, now seen corresponding path program 8 times [2021-01-20 15:29:05,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:05,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988134259] [2021-01-20 15:29:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988134259] [2021-01-20 15:29:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863310677] [2021-01-20 15:29:06,009 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 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 [2021-01-20 15:29:06,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 15:29:06,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:06,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 15:29:06,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:06,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:06,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 15:29:06,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919958897] [2021-01-20 15:29:06,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 15:29:06,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 15:29:06,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-20 15:29:06,215 INFO L87 Difference]: Start difference. First operand 4176 states. Second operand has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:06,548 INFO L93 Difference]: Finished difference Result 4660 states and 9280 transitions. [2021-01-20 15:29:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 15:29:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 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 161 [2021-01-20 15:29:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:06,587 INFO L225 Difference]: With dead ends: 4660 [2021-01-20 15:29:06,588 INFO L226 Difference]: Without dead ends: 4660 [2021-01-20 15:29:06,589 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 15:29:06,589 INFO L78 Accepts]: Start accepts. Automaton has 4660 states. Word has length 161 [2021-01-20 15:29:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:06,592 INFO L481 AbstractCegarLoop]: Abstraction has 4660 states. [2021-01-20 15:29:06,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4660 states. [2021-01-20 15:29:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-20 15:29:06,607 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:06,608 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2021-01-20 15:29:06,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-20 15:29:06,824 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash -767346167, now seen corresponding path program 9 times [2021-01-20 15:29:06,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:06,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030998740] [2021-01-20 15:29:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 15:29:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030998740] [2021-01-20 15:29:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376435635] [2021-01-20 15:29:07,158 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 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 [2021-01-20 15:29:07,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 15:29:07,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:07,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 15:29:07,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-01-20 15:29:07,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:07,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-01-20 15:29:07,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450346147] [2021-01-20 15:29:07,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-20 15:29:07,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:07,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-20 15:29:07,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-01-20 15:29:07,572 INFO L87 Difference]: Start difference. First operand 4660 states. Second operand has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:26,056 INFO L93 Difference]: Finished difference Result 6072 states and 12104 transitions. [2021-01-20 15:29:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-01-20 15:29:26,056 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 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 172 [2021-01-20 15:29:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:26,066 INFO L225 Difference]: With dead ends: 6072 [2021-01-20 15:29:26,066 INFO L226 Difference]: Without dead ends: 6072 [2021-01-20 15:29:26,094 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67168 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-01-20 15:29:26,094 INFO L78 Accepts]: Start accepts. Automaton has 6072 states. Word has length 172 [2021-01-20 15:29:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:26,094 INFO L481 AbstractCegarLoop]: Abstraction has 6072 states. [2021-01-20 15:29:26,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states. [2021-01-20 15:29:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-01-20 15:29:26,110 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:26,111 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 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] [2021-01-20 15:29:26,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:26,326 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2028149957, now seen corresponding path program 10 times [2021-01-20 15:29:26,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:26,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299929424] [2021-01-20 15:29:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 15:29:26,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299929424] [2021-01-20 15:29:26,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588797688] [2021-01-20 15:29:26,657 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 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 [2021-01-20 15:29:26,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 15:29:26,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 15:29:26,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 15:29:26,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:26,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 15:29:26,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166409241] [2021-01-20 15:29:26,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 15:29:26,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:26,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 15:29:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-20 15:29:26,930 INFO L87 Difference]: Start difference. First operand 6072 states. Second operand has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:27,385 INFO L93 Difference]: Finished difference Result 6644 states and 13248 transitions. [2021-01-20 15:29:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 15:29:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-01-20 15:29:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:27,397 INFO L225 Difference]: With dead ends: 6644 [2021-01-20 15:29:27,398 INFO L226 Difference]: Without dead ends: 6644 [2021-01-20 15:29:27,398 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 15:29:27,398 INFO L78 Accepts]: Start accepts. Automaton has 6644 states. Word has length 191 [2021-01-20 15:29:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:27,399 INFO L481 AbstractCegarLoop]: Abstraction has 6644 states. [2021-01-20 15:29:27,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6644 states. [2021-01-20 15:29:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-01-20 15:29:27,412 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:27,413 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2021-01-20 15:29:27,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:27,628 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:27,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1796866381, now seen corresponding path program 11 times [2021-01-20 15:29:27,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:27,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458719664] [2021-01-20 15:29:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 15:29:28,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458719664] [2021-01-20 15:29:28,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801938232] [2021-01-20 15:29:28,068 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 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 [2021-01-20 15:29:28,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-20 15:29:28,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:28,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 15:29:28,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 15:29:28,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:28,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-20 15:29:28,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123900950] [2021-01-20 15:29:28,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 15:29:28,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:28,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 15:29:28,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-20 15:29:28,311 INFO L87 Difference]: Start difference. First operand 6644 states. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:28,891 INFO L93 Difference]: Finished difference Result 7216 states and 14392 transitions. [2021-01-20 15:29:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 15:29:28,892 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 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 202 [2021-01-20 15:29:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:28,904 INFO L225 Difference]: With dead ends: 7216 [2021-01-20 15:29:28,905 INFO L226 Difference]: Without dead ends: 7216 [2021-01-20 15:29:28,905 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 15:29:28,906 INFO L78 Accepts]: Start accepts. Automaton has 7216 states. Word has length 202 [2021-01-20 15:29:28,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:28,906 INFO L481 AbstractCegarLoop]: Abstraction has 7216 states. [2021-01-20 15:29:28,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:29:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7216 states. [2021-01-20 15:29:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-01-20 15:29:28,920 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:28,921 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2021-01-20 15:29:29,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 15:29:29,135 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1927005179, now seen corresponding path program 12 times [2021-01-20 15:29:29,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:29,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841277505] [2021-01-20 15:29:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 15:29:29,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841277505] [2021-01-20 15:29:29,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201244951] [2021-01-20 15:29:29,628 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 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 [2021-01-20 15:29:29,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-20 15:29:29,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 15:29:29,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-01-20 15:29:30,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:30,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2021-01-20 15:29:30,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720734678] [2021-01-20 15:29:30,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-20 15:29:30,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-20 15:29:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 15:29:30,293 INFO L87 Difference]: Start difference. First operand 7216 states. Second operand has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:30:17,467 INFO L93 Difference]: Finished difference Result 8980 states and 17920 transitions. [2021-01-20 15:30:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 596 states. [2021-01-20 15:30:17,468 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 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 213 [2021-01-20 15:30:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:30:17,482 INFO L225 Difference]: With dead ends: 8980 [2021-01-20 15:30:17,482 INFO L226 Difference]: Without dead ends: 8980 [2021-01-20 15:30:17,505 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 610 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183115 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=68543, Invalid=305389, Unknown=0, NotChecked=0, Total=373932 [2021-01-20 15:30:17,506 INFO L78 Accepts]: Start accepts. Automaton has 8980 states. Word has length 213 [2021-01-20 15:30:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:30:17,506 INFO L481 AbstractCegarLoop]: Abstraction has 8980 states. [2021-01-20 15:30:17,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8980 states. [2021-01-20 15:30:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-01-20 15:30:17,522 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:30:17,523 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2021-01-20 15:30:17,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 15:30:17,739 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:30:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:30:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash -364467875, now seen corresponding path program 13 times [2021-01-20 15:30:17,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:30:17,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790250922] [2021-01-20 15:30:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:30:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 15:30:18,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790250922] [2021-01-20 15:30:18,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538289930] [2021-01-20 15:30:18,318 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 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 [2021-01-20 15:30:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:18,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 15:30:18,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:30:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 15:30:18,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:30:18,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-20 15:30:18,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598630150] [2021-01-20 15:30:18,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-20 15:30:18,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:30:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-20 15:30:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-20 15:30:18,589 INFO L87 Difference]: Start difference. First operand 8980 states. Second operand has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:30:19,456 INFO L93 Difference]: Finished difference Result 9640 states and 19240 transitions. [2021-01-20 15:30:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 15:30:19,458 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-01-20 15:30:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:30:19,467 INFO L225 Difference]: With dead ends: 9640 [2021-01-20 15:30:19,467 INFO L226 Difference]: Without dead ends: 9640 [2021-01-20 15:30:19,468 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 15:30:19,468 INFO L78 Accepts]: Start accepts. Automaton has 9640 states. Word has length 232 [2021-01-20 15:30:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:30:19,468 INFO L481 AbstractCegarLoop]: Abstraction has 9640 states. [2021-01-20 15:30:19,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states. [2021-01-20 15:30:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-01-20 15:30:19,484 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:30:19,484 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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] [2021-01-20 15:30:19,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-20 15:30:19,698 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:30:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:30:19,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1941157073, now seen corresponding path program 14 times [2021-01-20 15:30:19,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:30:19,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486090527] [2021-01-20 15:30:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:30:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 15:30:20,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486090527] [2021-01-20 15:30:20,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030220677] [2021-01-20 15:30:20,326 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 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 [2021-01-20 15:30:20,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 15:30:20,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:30:20,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 15:30:20,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:30:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 15:30:20,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:30:20,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-20 15:30:20,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778761547] [2021-01-20 15:30:20,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-20 15:30:20,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:30:20,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-20 15:30:20,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-20 15:30:20,709 INFO L87 Difference]: Start difference. First operand 9640 states. Second operand has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:30:21,685 INFO L93 Difference]: Finished difference Result 10300 states and 20560 transitions. [2021-01-20 15:30:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 15:30:21,686 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 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 243 [2021-01-20 15:30:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:30:21,695 INFO L225 Difference]: With dead ends: 10300 [2021-01-20 15:30:21,695 INFO L226 Difference]: Without dead ends: 10300 [2021-01-20 15:30:21,696 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 15:30:21,696 INFO L78 Accepts]: Start accepts. Automaton has 10300 states. Word has length 243 [2021-01-20 15:30:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:30:21,697 INFO L481 AbstractCegarLoop]: Abstraction has 10300 states. [2021-01-20 15:30:21,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 10300 states. [2021-01-20 15:30:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-01-20 15:30:21,707 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:30:21,708 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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] [2021-01-20 15:30:21,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:30:21,920 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:30:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:30:21,921 INFO L82 PathProgramCache]: Analyzing trace with hash -303975907, now seen corresponding path program 15 times [2021-01-20 15:30:21,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:30:21,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279694219] [2021-01-20 15:30:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:30:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1015 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 15:30:22,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279694219] [2021-01-20 15:30:22,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962006639] [2021-01-20 15:30:22,622 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 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 [2021-01-20 15:30:22,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-20 15:30:22,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:30:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 15:30:22,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:30:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2021-01-20 15:30:23,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:30:23,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2021-01-20 15:30:23,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545488511] [2021-01-20 15:30:23,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-20 15:30:23,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:30:23,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-20 15:30:23,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 15:30:23,309 INFO L87 Difference]: Start difference. First operand 10300 states. Second operand has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:30:24,173 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-01-20 15:32:14,414 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-01-20 15:32:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:32:20,368 INFO L93 Difference]: Finished difference Result 12416 states and 24792 transitions. [2021-01-20 15:32:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 881 states. [2021-01-20 15:32:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 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 254 [2021-01-20 15:32:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:32:20,378 INFO L225 Difference]: With dead ends: 12416 [2021-01-20 15:32:20,378 INFO L226 Difference]: Without dead ends: 12416 [2021-01-20 15:32:20,414 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 899 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404975 ImplicationChecksByTransitivity, 113.6s TimeCoverageRelationStatistics Valid=144350, Invalid=666550, Unknown=0, NotChecked=0, Total=810900 [2021-01-20 15:32:20,414 INFO L78 Accepts]: Start accepts. Automaton has 12416 states. Word has length 254 [2021-01-20 15:32:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:32:20,415 INFO L481 AbstractCegarLoop]: Abstraction has 12416 states. [2021-01-20 15:32:20,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:32:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states. [2021-01-20 15:32:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-01-20 15:32:20,425 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:32:20,425 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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] [2021-01-20 15:32:20,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 15:32:20,627 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:32:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:32:20,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1831509927, now seen corresponding path program 16 times [2021-01-20 15:32:20,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:32:20,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469112110] [2021-01-20 15:32:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:32:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:32:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-20 15:32:21,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469112110] [2021-01-20 15:32:21,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189231937] [2021-01-20 15:32:21,871 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 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 [2021-01-20 15:32:22,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 15:32:22,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:32:22,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-20 15:32:22,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:32:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-20 15:32:22,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:32:22,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-20 15:32:22,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981594525] [2021-01-20 15:32:22,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-20 15:32:22,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:32:22,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-20 15:32:22,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 15:32:22,237 INFO L87 Difference]: Start difference. First operand 12416 states. Second operand has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 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) [2021-01-20 15:32:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:32:24,020 INFO L93 Difference]: Finished difference Result 13164 states and 26288 transitions. [2021-01-20 15:32:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 15:32:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 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 273 [2021-01-20 15:32:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:32:24,033 INFO L225 Difference]: With dead ends: 13164 [2021-01-20 15:32:24,033 INFO L226 Difference]: Without dead ends: 13164 [2021-01-20 15:32:24,033 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 15:32:24,033 INFO L78 Accepts]: Start accepts. Automaton has 13164 states. Word has length 273 [2021-01-20 15:32:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:32:24,034 INFO L481 AbstractCegarLoop]: Abstraction has 13164 states. [2021-01-20 15:32:24,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 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) [2021-01-20 15:32:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states. [2021-01-20 15:32:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-01-20 15:32:24,047 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:32:24,047 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2021-01-20 15:32:24,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:32:24,248 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:32:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:32:24,249 INFO L82 PathProgramCache]: Analyzing trace with hash -237079865, now seen corresponding path program 17 times [2021-01-20 15:32:24,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:32:24,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165382204] [2021-01-20 15:32:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:32:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:32:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 1336 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-20 15:32:25,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165382204] [2021-01-20 15:32:25,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957522238] [2021-01-20 15:32:25,542 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 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 [2021-01-20 15:32:25,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-01-20 15:32:25,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:32:25,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 15:32:25,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:32:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2021-01-20 15:32:26,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:32:26,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2021-01-20 15:32:26,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602096405] [2021-01-20 15:32:26,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-20 15:32:26,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:32:26,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-20 15:32:26,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 15:32:26,667 INFO L87 Difference]: Start difference. First operand 13164 states. Second operand has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:32:32,932 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-20 15:37:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:37:36,146 INFO L93 Difference]: Finished difference Result 15544 states and 31048 transitions. [2021-01-20 15:37:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1151 states. [2021-01-20 15:37:36,147 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 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 284 [2021-01-20 15:37:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:37:36,164 INFO L225 Difference]: With dead ends: 15544 [2021-01-20 15:37:36,164 INFO L226 Difference]: Without dead ends: 15544 [2021-01-20 15:37:36,430 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 1172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695432 ImplicationChecksByTransitivity, 303.5s TimeCoverageRelationStatistics Valid=240556, Invalid=1136546, Unknown=0, NotChecked=0, Total=1377102 [2021-01-20 15:37:36,431 INFO L78 Accepts]: Start accepts. Automaton has 15544 states. Word has length 284 [2021-01-20 15:37:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:37:36,431 INFO L481 AbstractCegarLoop]: Abstraction has 15544 states. [2021-01-20 15:37:36,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:37:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15544 states. [2021-01-20 15:37:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-01-20 15:37:36,451 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:37:36,452 INFO L504 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 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] [2021-01-20 15:37:36,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:37:36,666 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:37:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:37:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1102218365, now seen corresponding path program 18 times [2021-01-20 15:37:36,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:37:36,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748602252] [2021-01-20 15:37:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:37:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:37:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-01-20 15:37:39,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748602252] [2021-01-20 15:37:39,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910345397] [2021-01-20 15:37:39,228 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 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 [2021-01-20 15:37:39,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-01-20 15:37:39,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:37:39,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 15:37:39,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:37:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2021-01-20 15:37:41,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:37:41,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2021-01-20 15:37:41,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929289472] [2021-01-20 15:37:41,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-20 15:37:41,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:37:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-20 15:37:41,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 15:37:41,502 INFO L87 Difference]: Start difference. First operand 15544 states. Second operand has 54 states, 54 states have (on average 6.092592592592593) internal successors, (329), 54 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 15:37:46,775 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-01-20 15:38:38,882 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-20 15:38:56,126 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 10 Received shutdown request... [2021-01-20 15:42:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 962 states. [2021-01-20 15:42:23,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-20 15:42:23,509 WARN L546 AbstractCegarLoop]: Verification canceled [2021-01-20 15:42:23,514 WARN L250 ceAbstractionStarter]: Timeout [2021-01-20 15:42:23,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 03:42:23 BasicIcfg [2021-01-20 15:42:23,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 15:42:23,516 INFO L168 Benchmark]: Toolchain (without parser) took 813159.14 ms. Allocated memory was 306.2 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 280.3 MB in the beginning and 803.7 MB in the end (delta: -523.4 MB). Peak memory consumption was 994.7 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:23,517 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 306.2 MB. Free memory is still 276.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 15:42:23,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1305.24 ms. Allocated memory is still 306.2 MB. Free memory was 280.0 MB in the beginning and 234.3 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:23,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.88 ms. Allocated memory is still 306.2 MB. Free memory was 234.3 MB in the beginning and 232.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:23,518 INFO L168 Benchmark]: Boogie Preprocessor took 31.19 ms. Allocated memory is still 306.2 MB. Free memory was 232.2 MB in the beginning and 231.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 15:42:23,519 INFO L168 Benchmark]: RCFGBuilder took 605.54 ms. Allocated memory is still 306.2 MB. Free memory was 231.2 MB in the beginning and 204.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:23,519 INFO L168 Benchmark]: TraceAbstraction took 811108.71 ms. Allocated memory was 306.2 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 204.9 MB in the beginning and 803.7 MB in the end (delta: -598.8 MB). Peak memory consumption was 920.0 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:23,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 306.2 MB. Free memory is still 276.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1305.24 ms. Allocated memory is still 306.2 MB. Free memory was 280.0 MB in the beginning and 234.3 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 97.88 ms. Allocated memory is still 306.2 MB. Free memory was 234.3 MB in the beginning and 232.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.19 ms. Allocated memory is still 306.2 MB. Free memory was 232.2 MB in the beginning and 231.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 605.54 ms. Allocated memory is still 306.2 MB. Free memory was 231.2 MB in the beginning and 204.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 811108.71 ms. Allocated memory was 306.2 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 204.9 MB in the beginning and 803.7 MB in the end (delta: -598.8 MB). Peak memory consumption was 920.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (15544states) and FLOYD_HOARE automaton (currently 962 states, 54 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 989 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 810.9s, OverallIterations: 21, TraceHistogramMax: 17, AutomataDifference: 786.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2073 SDtfs, 60020 SDslu, 28479 SDs, 0 SdLazy, 5071 SolverSat, 4925 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8436 GetRequests, 3802 SyntacticMatches, 0 SemanticMatches, 4633 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845518 ImplicationChecksByTransitivity, 769.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15544occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 6745 NumberOfCodeBlocks, 6591 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 6706 ConstructedInterpolants, 0 QuantifiedInterpolants, 3059940 SizeOfPredicates, 252 NumberOfNonLiveVariables, 6699 ConjunctsInSsa, 270 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 7175/21263 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