/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 20:23:50,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 20:23:50,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 20:23:50,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 20:23:50,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 20:23:50,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 20:23:50,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 20:23:50,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 20:23:50,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 20:23:50,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 20:23:50,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 20:23:50,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 20:23:50,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 20:23:50,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 20:23:50,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 20:23:50,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 20:23:50,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 20:23:50,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 20:23:50,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 20:23:50,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 20:23:50,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 20:23:50,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 20:23:50,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 20:23:50,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 20:23:50,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-17 20:23:50,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-17 20:23:50,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-17 20:23:50,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-17 20:23:50,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-17 20:23:50,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-17 20:23:50,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 20:23:50,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 20:23:50,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 20:23:50,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 20:23:50,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 20:23:50,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 20:23:50,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 20:23:50,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 20:23:50,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 20:23:50,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 20:23:50,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 20:23:50,676 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-keepdead.epf [2020-12-17 20:23:50,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 20:23:50,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 20:23:50,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 20:23:50,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 20:23:50,738 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 20:23:50,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 20:23:50,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 20:23:50,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 20:23:50,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 20:23:50,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 20:23:50,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 20:23:50,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 20:23:50,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 20:23:50,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 20:23:50,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 20:23:50,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 20:23:50,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 20:23:50,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 20:23:50,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 20:23:50,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 20:23:50,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 20:23:50,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 20:23:50,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 20:23:50,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 20:23:50,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 20:23:50,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 20:23:50,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 20:23:50,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 20:23:50,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 20:23:50,744 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 20:23:50,744 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 20:23:50,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 20:23:51,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 20:23:51,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 20:23:51,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 20:23:51,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 20:23:51,174 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 20:23:51,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2020-12-17 20:23:51,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab12581e/9c192e6d43964586b974b8e724d81fb1/FLAG0c3ba0e83 [2020-12-17 20:23:52,159 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 20:23:52,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2020-12-17 20:23:52,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab12581e/9c192e6d43964586b974b8e724d81fb1/FLAG0c3ba0e83 [2020-12-17 20:23:52,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab12581e/9c192e6d43964586b974b8e724d81fb1 [2020-12-17 20:23:52,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 20:23:52,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 20:23:52,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 20:23:52,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 20:23:52,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 20:23:52,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775ed3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:52, skipping insertion in model container [2020-12-17 20:23:52,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:23:52" (1/1) ... [2020-12-17 20:23:52,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 20:23:52,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 20:23:53,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 20:23:53,102 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 20:23:53,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 20:23:53,367 INFO L208 MainTranslator]: Completed translation [2020-12-17 20:23:53,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53 WrapperNode [2020-12-17 20:23:53,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 20:23:53,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 20:23:53,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 20:23:53,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 20:23:53,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 20:23:53,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 20:23:53,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 20:23:53,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 20:23:53,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (1/1) ... [2020-12-17 20:23:53,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 20:23:53,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 20:23:53,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 20:23:53,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 20:23:53,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (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 [2020-12-17 20:23:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 20:23:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 20:23:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-17 20:23:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-12-17 20:23:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-12-17 20:23:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 20:23:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-12-17 20:23:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 20:23:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 20:23:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 20:23:53,591 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 20:23:54,060 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 20:23:54,061 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-17 20:23:54,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:23:54 BoogieIcfgContainer [2020-12-17 20:23:54,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 20:23:54,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 20:23:54,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 20:23:54,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 20:23:54,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:23:52" (1/3) ... [2020-12-17 20:23:54,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253aef9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:23:54, skipping insertion in model container [2020-12-17 20:23:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:23:53" (2/3) ... [2020-12-17 20:23:54,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253aef9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:23:54, skipping insertion in model container [2020-12-17 20:23:54,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:23:54" (3/3) ... [2020-12-17 20:23:54,073 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-12-17 20:23:54,089 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 20:23:54,090 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 20:23:54,094 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 20:23:54,095 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 20:23:54,133 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,134 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,134 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,134 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,135 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,135 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,135 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,135 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,136 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,136 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,136 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,136 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,137 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,137 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,137 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,137 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,138 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,138 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,138 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,138 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,139 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,139 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,139 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,139 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,140 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,140 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,140 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,140 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,141 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,141 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,141 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,142 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,142 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,142 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,142 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,143 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,143 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,143 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,143 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,144 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,144 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,144 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,144 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,145 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,145 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,145 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,145 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,146 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,146 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,146 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,146 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,147 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,147 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,147 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,147 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,148 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,148 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,148 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,148 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,149 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,149 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,149 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,149 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,150 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,150 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,150 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,150 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,150 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,151 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,151 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,151 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,151 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,152 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,152 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,152 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,152 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,152 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,153 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,153 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,153 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,154 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,154 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,154 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,154 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,155 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,155 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,155 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,155 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,155 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,156 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,156 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,156 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,156 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,156 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,157 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,157 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,157 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,157 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,158 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,158 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,158 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,158 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,159 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,159 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,159 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,159 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,160 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,160 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,160 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,160 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,161 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,161 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,161 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,161 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,162 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,162 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,162 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,162 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,163 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,163 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,163 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,164 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,164 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,164 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,164 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,165 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,165 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,165 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,165 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,166 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,166 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,166 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,166 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,167 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,167 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,167 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,167 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,167 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,168 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,168 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,168 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,168 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,169 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,169 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,169 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,169 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,170 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,170 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,170 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,170 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,170 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,170 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,171 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,171 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,171 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,171 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,172 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,172 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,172 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,173 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,173 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,173 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,173 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,173 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,174 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,174 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,174 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,174 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,174 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,175 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,175 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,175 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,176 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,176 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,176 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,176 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,176 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,177 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,177 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,177 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,178 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,178 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,180 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,181 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,181 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,181 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,182 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,182 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,182 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,182 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,183 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,183 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,183 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,183 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,184 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,184 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,184 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,184 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,185 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,185 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,185 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,185 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,186 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,186 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,186 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,186 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,186 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,187 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,187 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 20:23:54,197 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-12-17 20:23:54,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-17 20:23:54,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 20:23:54,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 20:23:54,238 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 20:23:54,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 20:23:54,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 20:23:54,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 20:23:54,239 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 20:23:54,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 20:23:54,256 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 114 transitions, 236 flow [2020-12-17 20:23:54,335 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-17 20:23:54,353 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:54,354 INFO L504 BasicCegarLoop]: trace histogram [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] [2020-12-17 20:23:54,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1689694122, now seen corresponding path program 1 times [2020-12-17 20:23:54,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:54,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513122480] [2020-12-17 20:23:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:54,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513122480] [2020-12-17 20:23:54,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:54,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-17 20:23:54,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648442818] [2020-12-17 20:23:54,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-17 20:23:54,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:54,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-17 20:23:54,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-17 20:23:54,644 INFO L87 Difference]: Start difference. First operand has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:54,700 INFO L93 Difference]: Finished difference Result 1127 states and 2257 transitions. [2020-12-17 20:23:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-17 20:23:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 32 [2020-12-17 20:23:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:54,704 INFO L763 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 [2020-12-17 20:23:54,704 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2257 transitions. Word has length 32 [2020-12-17 20:23:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:54,706 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 2257 transitions. [2020-12-17 20:23:54,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2257 transitions. [2020-12-17 20:23:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-17 20:23:54,709 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:54,709 INFO L504 BasicCegarLoop]: trace histogram [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] [2020-12-17 20:23:54,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 20:23:54,709 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2099714549, now seen corresponding path program 1 times [2020-12-17 20:23:54,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:54,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527047] [2020-12-17 20:23:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:54,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527047] [2020-12-17 20:23:54,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 20:23:54,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-17 20:23:54,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700846437] [2020-12-17 20:23:54,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-17 20:23:54,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-17 20:23:54,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-17 20:23:54,857 INFO L87 Difference]: Start difference. First operand 1127 states and 2257 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:54,947 INFO L93 Difference]: Finished difference Result 663 states and 1255 transitions. [2020-12-17 20:23:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-17 20:23:54,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 32 [2020-12-17 20:23:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:54,949 INFO L763 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 [2020-12-17 20:23:54,949 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1255 transitions. Word has length 32 [2020-12-17 20:23:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:54,950 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 1255 transitions. [2020-12-17 20:23:54,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1255 transitions. [2020-12-17 20:23:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-17 20:23:54,952 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:54,952 INFO L504 BasicCegarLoop]: trace histogram [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] [2020-12-17 20:23:54,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 20:23:54,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash 860934943, now seen corresponding path program 1 times [2020-12-17 20:23:54,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:54,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248260074] [2020-12-17 20:23:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:55,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248260074] [2020-12-17 20:23:55,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213132051] [2020-12-17 20:23:55,069 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 [2020-12-17 20:23:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-17 20:23:55,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:55,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:55,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-17 20:23:55,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13940504] [2020-12-17 20:23:55,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 20:23:55,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:55,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 20:23:55,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-17 20:23:55,326 INFO L87 Difference]: Start difference. First operand 663 states and 1255 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:55,459 INFO L93 Difference]: Finished difference Result 668 states and 1260 transitions. [2020-12-17 20:23:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-17 20:23:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2020-12-17 20:23:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:55,461 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-17 20:23:55,461 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1260 transitions. Word has length 37 [2020-12-17 20:23:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:55,461 INFO L481 AbstractCegarLoop]: Abstraction has 668 states and 1260 transitions. [2020-12-17 20:23:55,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1260 transitions. [2020-12-17 20:23:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 20:23:55,463 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:55,464 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 20:23:55,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-17 20:23:55,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:55,677 INFO L82 PathProgramCache]: Analyzing trace with hash -419544011, now seen corresponding path program 2 times [2020-12-17 20:23:55,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:55,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663896130] [2020-12-17 20:23:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:55,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663896130] [2020-12-17 20:23:55,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020895099] [2020-12-17 20:23:55,874 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 [2020-12-17 20:23:55,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:23:55,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:55,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-17 20:23:55,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:56,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:56,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-17 20:23:56,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576783535] [2020-12-17 20:23:56,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-17 20:23:56,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:56,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-17 20:23:56,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-17 20:23:56,012 INFO L87 Difference]: Start difference. First operand 668 states and 1260 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:56,141 INFO L93 Difference]: Finished difference Result 673 states and 1265 transitions. [2020-12-17 20:23:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 20:23:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-12-17 20:23:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:56,143 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-17 20:23:56,143 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1265 transitions. Word has length 42 [2020-12-17 20:23:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:56,144 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 1265 transitions. [2020-12-17 20:23:56,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1265 transitions. [2020-12-17 20:23:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 20:23:56,146 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:56,146 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-12-17 20:23:56,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:23:56,356 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:56,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1889145055, now seen corresponding path program 3 times [2020-12-17 20:23:56,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:56,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325185370] [2020-12-17 20:23:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:56,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325185370] [2020-12-17 20:23:56,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598380793] [2020-12-17 20:23:56,464 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 [2020-12-17 20:23:56,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-17 20:23:56,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:56,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-17 20:23:56,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:56,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:56,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-12-17 20:23:56,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147895565] [2020-12-17 20:23:56,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-17 20:23:56,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-17 20:23:56,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-17 20:23:56,652 INFO L87 Difference]: Start difference. First operand 673 states and 1265 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:56,992 INFO L93 Difference]: Finished difference Result 678 states and 1270 transitions. [2020-12-17 20:23:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-17 20:23:56,993 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 47 [2020-12-17 20:23:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:56,994 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-17 20:23:56,994 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1270 transitions. Word has length 47 [2020-12-17 20:23:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:56,994 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 1270 transitions. [2020-12-17 20:23:56,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1270 transitions. [2020-12-17 20:23:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 20:23:56,996 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:56,996 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-12-17 20:23:57,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:23:57,197 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:57,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:57,198 INFO L82 PathProgramCache]: Analyzing trace with hash -292184459, now seen corresponding path program 4 times [2020-12-17 20:23:57,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:57,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49930001] [2020-12-17 20:23:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:57,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49930001] [2020-12-17 20:23:57,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942384740] [2020-12-17 20:23:57,367 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 [2020-12-17 20:23:57,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:23:57,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:57,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 20:23:57,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:57,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:57,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-12-17 20:23:57,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534024586] [2020-12-17 20:23:57,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 20:23:57,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 20:23:57,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-17 20:23:57,521 INFO L87 Difference]: Start difference. First operand 678 states and 1270 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:57,886 INFO L93 Difference]: Finished difference Result 683 states and 1275 transitions. [2020-12-17 20:23:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-17 20:23:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2020-12-17 20:23:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:57,893 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2020-12-17 20:23:57,893 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1275 transitions. Word has length 52 [2020-12-17 20:23:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:57,893 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1275 transitions. [2020-12-17 20:23:57,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1275 transitions. [2020-12-17 20:23:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-17 20:23:57,895 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:57,895 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2020-12-17 20:23:58,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:23:58,097 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1866391905, now seen corresponding path program 5 times [2020-12-17 20:23:58,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:58,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344000562] [2020-12-17 20:23:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:58,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344000562] [2020-12-17 20:23:58,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723646947] [2020-12-17 20:23:58,290 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 [2020-12-17 20:23:58,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-17 20:23:58,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:58,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 20:23:58,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:58,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:58,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-12-17 20:23:58,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759756237] [2020-12-17 20:23:58,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-17 20:23:58,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:58,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-17 20:23:58,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-12-17 20:23:58,464 INFO L87 Difference]: Start difference. First operand 683 states and 1275 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:58,884 INFO L93 Difference]: Finished difference Result 688 states and 1280 transitions. [2020-12-17 20:23:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-17 20:23:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 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 57 [2020-12-17 20:23:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:58,888 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-12-17 20:23:58,889 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1280 transitions. Word has length 57 [2020-12-17 20:23:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:58,890 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1280 transitions. [2020-12-17 20:23:58,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1280 transitions. [2020-12-17 20:23:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-17 20:23:58,891 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:58,891 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2020-12-17 20:23:59,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-17 20:23:59,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:23:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:23:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1165043893, now seen corresponding path program 6 times [2020-12-17 20:23:59,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:23:59,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921298904] [2020-12-17 20:23:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:23:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:23:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:59,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921298904] [2020-12-17 20:23:59,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352910755] [2020-12-17 20:23:59,333 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 [2020-12-17 20:23:59,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-17 20:23:59,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:23:59,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 20:23:59,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:23:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:23:59,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:23:59,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-17 20:23:59,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063865207] [2020-12-17 20:23:59,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 20:23:59,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:23:59,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 20:23:59,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-17 20:23:59,554 INFO L87 Difference]: Start difference. First operand 688 states and 1280 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:23:59,952 INFO L93 Difference]: Finished difference Result 693 states and 1285 transitions. [2020-12-17 20:23:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 20:23:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 62 [2020-12-17 20:23:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:23:59,954 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-12-17 20:23:59,954 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1285 transitions. Word has length 62 [2020-12-17 20:23:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:23:59,955 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1285 transitions. [2020-12-17 20:23:59,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:23:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1285 transitions. [2020-12-17 20:23:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-17 20:23:59,956 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:23:59,956 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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] [2020-12-17 20:24:00,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:00,157 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:00,158 INFO L82 PathProgramCache]: Analyzing trace with hash 885128287, now seen corresponding path program 7 times [2020-12-17 20:24:00,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:00,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195286064] [2020-12-17 20:24:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:00,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195286064] [2020-12-17 20:24:00,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568924288] [2020-12-17 20:24:00,441 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 [2020-12-17 20:24:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:00,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 20:24:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:00,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:00,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 20:24:00,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334772804] [2020-12-17 20:24:00,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 20:24:00,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:00,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 20:24:00,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-12-17 20:24:00,590 INFO L87 Difference]: Start difference. First operand 693 states and 1285 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:01,077 INFO L93 Difference]: Finished difference Result 698 states and 1290 transitions. [2020-12-17 20:24:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-17 20:24:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2020-12-17 20:24:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:01,079 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 20:24:01,080 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1290 transitions. Word has length 67 [2020-12-17 20:24:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:01,080 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 1290 transitions. [2020-12-17 20:24:01,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1290 transitions. [2020-12-17 20:24:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-17 20:24:01,081 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:01,081 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2020-12-17 20:24:01,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:01,283 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:01,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2011897099, now seen corresponding path program 8 times [2020-12-17 20:24:01,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:01,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579933866] [2020-12-17 20:24:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:01,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579933866] [2020-12-17 20:24:01,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487967313] [2020-12-17 20:24:01,545 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 [2020-12-17 20:24:01,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:01,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 20:24:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:01,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:01,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-12-17 20:24:01,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757260042] [2020-12-17 20:24:01,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 20:24:01,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:01,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 20:24:01,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-12-17 20:24:01,724 INFO L87 Difference]: Start difference. First operand 698 states and 1290 transitions. Second operand has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:02,311 INFO L93 Difference]: Finished difference Result 703 states and 1295 transitions. [2020-12-17 20:24:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 20:24:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 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 72 [2020-12-17 20:24:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:02,313 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 20:24:02,313 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1295 transitions. Word has length 72 [2020-12-17 20:24:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:02,313 INFO L481 AbstractCegarLoop]: Abstraction has 703 states and 1295 transitions. [2020-12-17 20:24:02,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1295 transitions. [2020-12-17 20:24:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-17 20:24:02,314 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:02,315 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 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] [2020-12-17 20:24:02,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-17 20:24:02,523 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:02,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:02,524 INFO L82 PathProgramCache]: Analyzing trace with hash -224876001, now seen corresponding path program 9 times [2020-12-17 20:24:02,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:02,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167314731] [2020-12-17 20:24:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:02,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167314731] [2020-12-17 20:24:02,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828989592] [2020-12-17 20:24:02,818 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 [2020-12-17 20:24:03,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 20:24:03,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:03,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 20:24:03,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:03,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:03,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 20:24:03,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323540396] [2020-12-17 20:24:03,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 20:24:03,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:03,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 20:24:03,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-12-17 20:24:03,130 INFO L87 Difference]: Start difference. First operand 703 states and 1295 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:03,858 INFO L93 Difference]: Finished difference Result 708 states and 1300 transitions. [2020-12-17 20:24:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 20:24:03,859 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2020-12-17 20:24:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:03,860 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 20:24:03,860 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1300 transitions. Word has length 77 [2020-12-17 20:24:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:03,861 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 1300 transitions. [2020-12-17 20:24:03,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1300 transitions. [2020-12-17 20:24:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-17 20:24:03,862 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:03,862 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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] [2020-12-17 20:24:04,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:04,071 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:04,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:04,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2114243893, now seen corresponding path program 10 times [2020-12-17 20:24:04,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:04,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135205657] [2020-12-17 20:24:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:04,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135205657] [2020-12-17 20:24:04,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973417227] [2020-12-17 20:24:04,423 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 [2020-12-17 20:24:04,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:24:04,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:04,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 20:24:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:04,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:04,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-12-17 20:24:04,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531289659] [2020-12-17 20:24:04,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 20:24:04,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:04,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 20:24:04,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-12-17 20:24:04,591 INFO L87 Difference]: Start difference. First operand 708 states and 1300 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:05,247 INFO L93 Difference]: Finished difference Result 713 states and 1305 transitions. [2020-12-17 20:24:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 20:24:05,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2020-12-17 20:24:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:05,249 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2020-12-17 20:24:05,250 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1305 transitions. Word has length 82 [2020-12-17 20:24:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:05,250 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1305 transitions. [2020-12-17 20:24:05,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1305 transitions. [2020-12-17 20:24:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-17 20:24:05,251 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:05,251 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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] [2020-12-17 20:24:05,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:05,462 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:05,463 INFO L82 PathProgramCache]: Analyzing trace with hash 356591583, now seen corresponding path program 11 times [2020-12-17 20:24:05,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:05,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475934225] [2020-12-17 20:24:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:05,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475934225] [2020-12-17 20:24:05,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240479188] [2020-12-17 20:24:05,841 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 [2020-12-17 20:24:05,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 20:24:05,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:05,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 20:24:05,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:06,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:06,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-12-17 20:24:06,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337317034] [2020-12-17 20:24:06,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 20:24:06,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:06,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 20:24:06,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-12-17 20:24:06,067 INFO L87 Difference]: Start difference. First operand 713 states and 1305 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:06,888 INFO L93 Difference]: Finished difference Result 718 states and 1310 transitions. [2020-12-17 20:24:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 20:24:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2020-12-17 20:24:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:06,890 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 20:24:06,891 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1310 transitions. Word has length 87 [2020-12-17 20:24:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:06,891 INFO L481 AbstractCegarLoop]: Abstraction has 718 states and 1310 transitions. [2020-12-17 20:24:06,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1310 transitions. [2020-12-17 20:24:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-17 20:24:06,892 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:06,892 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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] [2020-12-17 20:24:07,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-17 20:24:07,102 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1506076533, now seen corresponding path program 12 times [2020-12-17 20:24:07,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:07,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366311838] [2020-12-17 20:24:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:07,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366311838] [2020-12-17 20:24:07,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366177391] [2020-12-17 20:24:07,542 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 [2020-12-17 20:24:07,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-12-17 20:24:07,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:07,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 20:24:07,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:07,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:07,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-12-17 20:24:07,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209382929] [2020-12-17 20:24:07,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-17 20:24:07,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:07,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-17 20:24:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2020-12-17 20:24:07,881 INFO L87 Difference]: Start difference. First operand 718 states and 1310 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:08,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:08,843 INFO L93 Difference]: Finished difference Result 723 states and 1315 transitions. [2020-12-17 20:24:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 20:24:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2020-12-17 20:24:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:08,851 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 20:24:08,851 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1315 transitions. Word has length 92 [2020-12-17 20:24:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:08,851 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1315 transitions. [2020-12-17 20:24:08,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1315 transitions. [2020-12-17 20:24:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-17 20:24:08,853 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:08,854 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 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] [2020-12-17 20:24:09,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-17 20:24:09,067 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1555527071, now seen corresponding path program 13 times [2020-12-17 20:24:09,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:09,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152281638] [2020-12-17 20:24:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:09,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152281638] [2020-12-17 20:24:09,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79348422] [2020-12-17 20:24:09,573 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 [2020-12-17 20:24:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:09,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 20:24:09,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:09,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:09,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-12-17 20:24:09,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498192541] [2020-12-17 20:24:09,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-17 20:24:09,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-17 20:24:09,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-12-17 20:24:09,728 INFO L87 Difference]: Start difference. First operand 723 states and 1315 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:10,596 INFO L93 Difference]: Finished difference Result 728 states and 1320 transitions. [2020-12-17 20:24:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 20:24:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 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 97 [2020-12-17 20:24:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:10,601 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 20:24:10,601 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1320 transitions. Word has length 97 [2020-12-17 20:24:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:10,601 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 1320 transitions. [2020-12-17 20:24:10,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1320 transitions. [2020-12-17 20:24:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-17 20:24:10,605 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:10,605 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 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] [2020-12-17 20:24:10,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-17 20:24:10,815 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash -119983691, now seen corresponding path program 14 times [2020-12-17 20:24:10,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:10,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400227170] [2020-12-17 20:24:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:11,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400227170] [2020-12-17 20:24:11,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127832124] [2020-12-17 20:24:11,304 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 [2020-12-17 20:24:11,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:11,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:11,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-17 20:24:11,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:11,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:11,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-12-17 20:24:11,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488158188] [2020-12-17 20:24:11,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-17 20:24:11,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:11,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-17 20:24:11,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 20:24:11,472 INFO L87 Difference]: Start difference. First operand 728 states and 1320 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 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) [2020-12-17 20:24:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:12,653 INFO L93 Difference]: Finished difference Result 733 states and 1325 transitions. [2020-12-17 20:24:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-17 20:24:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 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 102 [2020-12-17 20:24:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:12,657 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2020-12-17 20:24:12,657 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1325 transitions. Word has length 102 [2020-12-17 20:24:12,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:12,657 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1325 transitions. [2020-12-17 20:24:12,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 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) [2020-12-17 20:24:12,658 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1325 transitions. [2020-12-17 20:24:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-17 20:24:12,660 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:12,660 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 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] [2020-12-17 20:24:12,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:12,873 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:12,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1107848353, now seen corresponding path program 15 times [2020-12-17 20:24:12,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:12,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011326309] [2020-12-17 20:24:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:13,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011326309] [2020-12-17 20:24:13,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445359105] [2020-12-17 20:24:13,562 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 [2020-12-17 20:24:14,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-12-17 20:24:14,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:14,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-17 20:24:14,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:14,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:14,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-12-17 20:24:14,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986682799] [2020-12-17 20:24:14,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-17 20:24:14,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-17 20:24:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2020-12-17 20:24:14,239 INFO L87 Difference]: Start difference. First operand 733 states and 1325 transitions. Second operand has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:15,535 INFO L93 Difference]: Finished difference Result 738 states and 1330 transitions. [2020-12-17 20:24:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-17 20:24:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2020-12-17 20:24:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:15,537 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2020-12-17 20:24:15,537 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1330 transitions. Word has length 107 [2020-12-17 20:24:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:15,538 INFO L481 AbstractCegarLoop]: Abstraction has 738 states and 1330 transitions. [2020-12-17 20:24:15,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1330 transitions. [2020-12-17 20:24:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-17 20:24:15,539 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:15,539 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 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] [2020-12-17 20:24:15,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-17 20:24:15,751 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash 600157173, now seen corresponding path program 16 times [2020-12-17 20:24:15,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:15,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297116125] [2020-12-17 20:24:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:16,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297116125] [2020-12-17 20:24:16,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108887571] [2020-12-17 20:24:16,420 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 [2020-12-17 20:24:16,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:24:16,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:16,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-17 20:24:16,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:16,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:16,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-12-17 20:24:16,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215526203] [2020-12-17 20:24:16,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-17 20:24:16,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:16,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-17 20:24:16,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 20:24:16,616 INFO L87 Difference]: Start difference. First operand 738 states and 1330 transitions. Second operand has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:17,910 INFO L93 Difference]: Finished difference Result 743 states and 1335 transitions. [2020-12-17 20:24:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-17 20:24:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2020-12-17 20:24:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:17,912 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2020-12-17 20:24:17,912 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1335 transitions. Word has length 112 [2020-12-17 20:24:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:17,913 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1335 transitions. [2020-12-17 20:24:17,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1335 transitions. [2020-12-17 20:24:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-17 20:24:17,914 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:17,915 INFO L504 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 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] [2020-12-17 20:24:18,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-17 20:24:18,126 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash 587039007, now seen corresponding path program 17 times [2020-12-17 20:24:18,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:18,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779964437] [2020-12-17 20:24:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:18,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779964437] [2020-12-17 20:24:18,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831370024] [2020-12-17 20:24:18,858 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 [2020-12-17 20:24:19,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-12-17 20:24:19,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:19,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-17 20:24:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:19,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:19,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-12-17 20:24:19,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179192071] [2020-12-17 20:24:19,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-17 20:24:19,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-17 20:24:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2020-12-17 20:24:19,206 INFO L87 Difference]: Start difference. First operand 743 states and 1335 transitions. Second operand has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:20,720 INFO L93 Difference]: Finished difference Result 748 states and 1340 transitions. [2020-12-17 20:24:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-17 20:24:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2020-12-17 20:24:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:20,723 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2020-12-17 20:24:20,724 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1340 transitions. Word has length 117 [2020-12-17 20:24:20,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:20,724 INFO L481 AbstractCegarLoop]: Abstraction has 748 states and 1340 transitions. [2020-12-17 20:24:20,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1340 transitions. [2020-12-17 20:24:20,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-17 20:24:20,725 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:20,725 INFO L504 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 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] [2020-12-17 20:24:20,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:20,936 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash -837921227, now seen corresponding path program 18 times [2020-12-17 20:24:20,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:20,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770023605] [2020-12-17 20:24:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:21,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770023605] [2020-12-17 20:24:21,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639173761] [2020-12-17 20:24:21,808 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 [2020-12-17 20:24:23,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-12-17 20:24:23,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:23,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-17 20:24:23,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:23,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:23,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-12-17 20:24:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099759101] [2020-12-17 20:24:23,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-17 20:24:23,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:23,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-17 20:24:23,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 20:24:23,180 INFO L87 Difference]: Start difference. First operand 748 states and 1340 transitions. Second operand has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:24,749 INFO L93 Difference]: Finished difference Result 753 states and 1345 transitions. [2020-12-17 20:24:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-12-17 20:24:24,750 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2020-12-17 20:24:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:24,752 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2020-12-17 20:24:24,752 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1345 transitions. Word has length 122 [2020-12-17 20:24:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:24,753 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1345 transitions. [2020-12-17 20:24:24,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1345 transitions. [2020-12-17 20:24:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-17 20:24:24,754 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:24,754 INFO L504 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 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] [2020-12-17 20:24:24,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:24,965 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:24,966 INFO L82 PathProgramCache]: Analyzing trace with hash 717569759, now seen corresponding path program 19 times [2020-12-17 20:24:24,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:24,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692112516] [2020-12-17 20:24:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:25,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692112516] [2020-12-17 20:24:25,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657946101] [2020-12-17 20:24:25,837 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-17 20:24:25,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:26,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:26,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-12-17 20:24:26,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985761649] [2020-12-17 20:24:26,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-17 20:24:26,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:26,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-17 20:24:26,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2020-12-17 20:24:26,069 INFO L87 Difference]: Start difference. First operand 753 states and 1345 transitions. Second operand has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:27,833 INFO L93 Difference]: Finished difference Result 758 states and 1350 transitions. [2020-12-17 20:24:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-12-17 20:24:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2020-12-17 20:24:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:27,836 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2020-12-17 20:24:27,837 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1350 transitions. Word has length 127 [2020-12-17 20:24:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:27,837 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1350 transitions. [2020-12-17 20:24:27,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1350 transitions. [2020-12-17 20:24:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-17 20:24:27,838 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:27,838 INFO L504 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 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] [2020-12-17 20:24:28,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:28,049 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1446457461, now seen corresponding path program 20 times [2020-12-17 20:24:28,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:28,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830160169] [2020-12-17 20:24:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:29,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830160169] [2020-12-17 20:24:29,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601371146] [2020-12-17 20:24:29,154 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:29,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:24:29,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:29,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-17 20:24:29,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:29,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:29,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-12-17 20:24:29,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16793984] [2020-12-17 20:24:29,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-17 20:24:29,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:29,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-17 20:24:29,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2020-12-17 20:24:29,359 INFO L87 Difference]: Start difference. First operand 758 states and 1350 transitions. Second operand has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:31,120 INFO L93 Difference]: Finished difference Result 763 states and 1355 transitions. [2020-12-17 20:24:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-12-17 20:24:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2020-12-17 20:24:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:31,122 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2020-12-17 20:24:31,122 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1355 transitions. Word has length 132 [2020-12-17 20:24:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:31,123 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 1355 transitions. [2020-12-17 20:24:31,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1355 transitions. [2020-12-17 20:24:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-17 20:24:31,124 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:31,124 INFO L504 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 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] [2020-12-17 20:24:31,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-17 20:24:31,325 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash -380973921, now seen corresponding path program 21 times [2020-12-17 20:24:31,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:31,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369963582] [2020-12-17 20:24:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:32,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369963582] [2020-12-17 20:24:32,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92953732] [2020-12-17 20:24:32,443 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:34,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-12-17 20:24:34,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:34,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-17 20:24:34,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:34,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:34,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-12-17 20:24:34,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772431144] [2020-12-17 20:24:34,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-17 20:24:34,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-17 20:24:34,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 20:24:34,380 INFO L87 Difference]: Start difference. First operand 763 states and 1355 transitions. Second operand has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:36,361 INFO L93 Difference]: Finished difference Result 768 states and 1360 transitions. [2020-12-17 20:24:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-17 20:24:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2020-12-17 20:24:36,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:36,364 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2020-12-17 20:24:36,364 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1360 transitions. Word has length 137 [2020-12-17 20:24:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:36,364 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1360 transitions. [2020-12-17 20:24:36,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1360 transitions. [2020-12-17 20:24:36,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-17 20:24:36,365 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:36,366 INFO L504 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 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] [2020-12-17 20:24:36,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-17 20:24:36,575 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:36,576 INFO L82 PathProgramCache]: Analyzing trace with hash -976995659, now seen corresponding path program 22 times [2020-12-17 20:24:36,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:36,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684397760] [2020-12-17 20:24:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:37,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684397760] [2020-12-17 20:24:37,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768980420] [2020-12-17 20:24:37,786 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:37,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:24:37,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:37,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-17 20:24:37,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:37,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:37,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-12-17 20:24:37,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321463504] [2020-12-17 20:24:37,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-17 20:24:37,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-17 20:24:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 20:24:37,986 INFO L87 Difference]: Start difference. First operand 768 states and 1360 transitions. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:40,296 INFO L93 Difference]: Finished difference Result 773 states and 1365 transitions. [2020-12-17 20:24:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-12-17 20:24:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2020-12-17 20:24:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:40,298 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2020-12-17 20:24:40,298 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1365 transitions. Word has length 142 [2020-12-17 20:24:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:40,298 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1365 transitions. [2020-12-17 20:24:40,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1365 transitions. [2020-12-17 20:24:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-17 20:24:40,300 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:40,300 INFO L504 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 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] [2020-12-17 20:24:40,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:40,512 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:40,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1484117409, now seen corresponding path program 23 times [2020-12-17 20:24:40,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:40,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139157272] [2020-12-17 20:24:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:41,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139157272] [2020-12-17 20:24:41,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751304171] [2020-12-17 20:24:41,787 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:42,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-12-17 20:24:42,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:42,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-17 20:24:42,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:42,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:42,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-12-17 20:24:42,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332968624] [2020-12-17 20:24:42,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-17 20:24:42,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-17 20:24:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2020-12-17 20:24:42,553 INFO L87 Difference]: Start difference. First operand 773 states and 1365 transitions. Second operand has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:45,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:45,071 INFO L93 Difference]: Finished difference Result 778 states and 1370 transitions. [2020-12-17 20:24:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-12-17 20:24:45,072 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2020-12-17 20:24:45,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:45,073 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2020-12-17 20:24:45,073 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1370 transitions. Word has length 147 [2020-12-17 20:24:45,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:45,074 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1370 transitions. [2020-12-17 20:24:45,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1370 transitions. [2020-12-17 20:24:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-17 20:24:45,075 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:45,075 INFO L504 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 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] [2020-12-17 20:24:45,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-17 20:24:45,280 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash 288978165, now seen corresponding path program 24 times [2020-12-17 20:24:45,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:45,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171761276] [2020-12-17 20:24:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:24:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:46,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171761276] [2020-12-17 20:24:46,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037021645] [2020-12-17 20:24:46,659 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:56,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-12-17 20:24:56,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:24:56,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-17 20:24:56,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:24:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:24:56,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:24:56,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-12-17 20:24:56,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664711236] [2020-12-17 20:24:56,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-12-17 20:24:56,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:24:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-12-17 20:24:56,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 20:24:56,262 INFO L87 Difference]: Start difference. First operand 778 states and 1370 transitions. Second operand has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:24:58,973 INFO L93 Difference]: Finished difference Result 783 states and 1375 transitions. [2020-12-17 20:24:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-17 20:24:58,973 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2020-12-17 20:24:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:24:58,979 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2020-12-17 20:24:58,979 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1375 transitions. Word has length 152 [2020-12-17 20:24:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:24:58,980 INFO L481 AbstractCegarLoop]: Abstraction has 783 states and 1375 transitions. [2020-12-17 20:24:58,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:24:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1375 transitions. [2020-12-17 20:24:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-17 20:24:58,981 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:24:58,981 INFO L504 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 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] [2020-12-17 20:24:59,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:24:59,194 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:24:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:24:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1551935457, now seen corresponding path program 25 times [2020-12-17 20:24:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:24:59,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333091118] [2020-12-17 20:24:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:24:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:00,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333091118] [2020-12-17 20:25:00,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826725417] [2020-12-17 20:25:00,918 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:25:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:01,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-17 20:25:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:25:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:01,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:25:01,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-12-17 20:25:01,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990632588] [2020-12-17 20:25:01,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-12-17 20:25:01,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:25:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-12-17 20:25:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2020-12-17 20:25:01,128 INFO L87 Difference]: Start difference. First operand 783 states and 1375 transitions. Second operand has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:25:03,859 INFO L93 Difference]: Finished difference Result 788 states and 1380 transitions. [2020-12-17 20:25:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-12-17 20:25:03,860 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 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 157 [2020-12-17 20:25:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:25:03,861 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2020-12-17 20:25:03,861 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1380 transitions. Word has length 157 [2020-12-17 20:25:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:25:03,862 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1380 transitions. [2020-12-17 20:25:03,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1380 transitions. [2020-12-17 20:25:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-17 20:25:03,863 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:25:03,863 INFO L504 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 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] [2020-12-17 20:25:04,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-17 20:25:04,064 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:25:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:25:04,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1478156085, now seen corresponding path program 26 times [2020-12-17 20:25:04,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:25:04,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643464711] [2020-12-17 20:25:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:25:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:05,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643464711] [2020-12-17 20:25:05,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689036132] [2020-12-17 20:25:05,716 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:25:05,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:25:05,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:25:05,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-17 20:25:05,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:25:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:05,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:25:05,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-12-17 20:25:05,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797379078] [2020-12-17 20:25:05,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-17 20:25:05,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:25:05,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-17 20:25:05,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 20:25:05,934 INFO L87 Difference]: Start difference. First operand 788 states and 1380 transitions. Second operand has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:25:08,898 INFO L93 Difference]: Finished difference Result 793 states and 1385 transitions. [2020-12-17 20:25:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-12-17 20:25:08,899 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2020-12-17 20:25:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:25:08,900 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2020-12-17 20:25:08,900 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1385 transitions. Word has length 162 [2020-12-17 20:25:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:25:08,901 INFO L481 AbstractCegarLoop]: Abstraction has 793 states and 1385 transitions. [2020-12-17 20:25:08,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1385 transitions. [2020-12-17 20:25:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-17 20:25:08,902 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:25:08,902 INFO L504 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 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] [2020-12-17 20:25:09,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-17 20:25:09,104 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:25:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:25:09,104 INFO L82 PathProgramCache]: Analyzing trace with hash -802794017, now seen corresponding path program 27 times [2020-12-17 20:25:09,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:25:09,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325444282] [2020-12-17 20:25:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:25:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:10,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325444282] [2020-12-17 20:25:10,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632668486] [2020-12-17 20:25:10,913 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:25:15,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-12-17 20:25:15,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:25:15,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-17 20:25:15,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:25:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:15,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:25:15,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-12-17 20:25:15,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152973044] [2020-12-17 20:25:15,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-17 20:25:15,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:25:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-17 20:25:15,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2020-12-17 20:25:15,345 INFO L87 Difference]: Start difference. First operand 793 states and 1385 transitions. Second operand has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:25:18,633 INFO L93 Difference]: Finished difference Result 798 states and 1390 transitions. [2020-12-17 20:25:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-12-17 20:25:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2020-12-17 20:25:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:25:18,635 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2020-12-17 20:25:18,635 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1390 transitions. Word has length 167 [2020-12-17 20:25:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:25:18,636 INFO L481 AbstractCegarLoop]: Abstraction has 798 states and 1390 transitions. [2020-12-17 20:25:18,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1390 transitions. [2020-12-17 20:25:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-17 20:25:18,637 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:25:18,638 INFO L504 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 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] [2020-12-17 20:25:18,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-17 20:25:18,845 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:25:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:25:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash 619477365, now seen corresponding path program 28 times [2020-12-17 20:25:18,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:25:18,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298714932] [2020-12-17 20:25:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:25:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:20,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298714932] [2020-12-17 20:25:20,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600340163] [2020-12-17 20:25:20,857 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:25:20,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:25:20,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:25:20,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-17 20:25:20,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:25:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:21,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:25:21,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-12-17 20:25:21,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968155768] [2020-12-17 20:25:21,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-12-17 20:25:21,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:25:21,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-12-17 20:25:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2020-12-17 20:25:21,094 INFO L87 Difference]: Start difference. First operand 798 states and 1390 transitions. Second operand has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:25:24,687 INFO L93 Difference]: Finished difference Result 803 states and 1395 transitions. [2020-12-17 20:25:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-12-17 20:25:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 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 [2020-12-17 20:25:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:25:24,689 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2020-12-17 20:25:24,690 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1395 transitions. Word has length 172 [2020-12-17 20:25:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:25:24,690 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1395 transitions. [2020-12-17 20:25:24,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1395 transitions. [2020-12-17 20:25:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-17 20:25:24,692 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:25:24,692 INFO L504 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 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] [2020-12-17 20:25:24,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:25:24,907 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:25:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:25:24,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1787092065, now seen corresponding path program 29 times [2020-12-17 20:25:24,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:25:24,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276431886] [2020-12-17 20:25:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:25:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:27,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276431886] [2020-12-17 20:25:27,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198357714] [2020-12-17 20:25:27,122 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:25:29,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-12-17 20:25:29,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:25:29,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-17 20:25:29,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:25:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:29,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:25:29,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2020-12-17 20:25:29,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774261719] [2020-12-17 20:25:29,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-12-17 20:25:29,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:25:29,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-12-17 20:25:29,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2020-12-17 20:25:29,249 INFO L87 Difference]: Start difference. First operand 803 states and 1395 transitions. Second operand has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:25:32,995 INFO L93 Difference]: Finished difference Result 808 states and 1400 transitions. [2020-12-17 20:25:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-12-17 20:25:32,996 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2020-12-17 20:25:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:25:32,997 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2020-12-17 20:25:32,997 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1400 transitions. Word has length 177 [2020-12-17 20:25:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:25:32,998 INFO L481 AbstractCegarLoop]: Abstraction has 808 states and 1400 transitions. [2020-12-17 20:25:32,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:25:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1400 transitions. [2020-12-17 20:25:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-17 20:25:32,999 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:25:32,999 INFO L504 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 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] [2020-12-17 20:25:33,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-17 20:25:33,201 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:25:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:25:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1389214795, now seen corresponding path program 30 times [2020-12-17 20:25:33,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:25:33,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663671846] [2020-12-17 20:25:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:25:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:25:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:25:35,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663671846] [2020-12-17 20:25:35,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517771169] [2020-12-17 20:25:35,444 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:26:07,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-12-17 20:26:07,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:26:07,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-17 20:26:07,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:26:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:26:07,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:26:07,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2020-12-17 20:26:07,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507346147] [2020-12-17 20:26:07,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-17 20:26:07,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:26:07,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-17 20:26:07,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2020-12-17 20:26:07,630 INFO L87 Difference]: Start difference. First operand 808 states and 1400 transitions. Second operand has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:26:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:26:11,816 INFO L93 Difference]: Finished difference Result 813 states and 1405 transitions. [2020-12-17 20:26:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-12-17 20:26:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2020-12-17 20:26:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:26:11,818 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2020-12-17 20:26:11,818 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1405 transitions. Word has length 182 [2020-12-17 20:26:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:26:11,819 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1405 transitions. [2020-12-17 20:26:11,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:26:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1405 transitions. [2020-12-17 20:26:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-12-17 20:26:11,820 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:26:11,821 INFO L504 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 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] [2020-12-17 20:26:12,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:26:12,021 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:26:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:26:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1871068833, now seen corresponding path program 31 times [2020-12-17 20:26:12,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:26:12,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804051538] [2020-12-17 20:26:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:26:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:26:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:26:14,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804051538] [2020-12-17 20:26:14,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395708438] [2020-12-17 20:26:14,517 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:26:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:26:14,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 64 conjunts are in the unsatisfiable core [2020-12-17 20:26:14,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:26:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:26:14,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:26:14,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2020-12-17 20:26:14,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122778268] [2020-12-17 20:26:14,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-12-17 20:26:14,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:26:14,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-12-17 20:26:14,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2020-12-17 20:26:14,767 INFO L87 Difference]: Start difference. First operand 813 states and 1405 transitions. Second operand has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:26:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:26:19,240 INFO L93 Difference]: Finished difference Result 818 states and 1410 transitions. [2020-12-17 20:26:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-12-17 20:26:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2020-12-17 20:26:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:26:19,242 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2020-12-17 20:26:19,242 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1410 transitions. Word has length 187 [2020-12-17 20:26:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:26:19,243 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1410 transitions. [2020-12-17 20:26:19,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:26:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1410 transitions. [2020-12-17 20:26:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-17 20:26:19,244 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:26:19,244 INFO L504 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 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] [2020-12-17 20:26:19,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-17 20:26:19,445 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:26:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:26:19,446 INFO L82 PathProgramCache]: Analyzing trace with hash 292568565, now seen corresponding path program 32 times [2020-12-17 20:26:19,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:26:19,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224634485] [2020-12-17 20:26:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:26:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:26:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:26:22,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224634485] [2020-12-17 20:26:22,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039913330] [2020-12-17 20:26:22,099 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:26:22,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:26:22,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:26:22,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-17 20:26:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:26:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:26:22,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:26:22,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2020-12-17 20:26:22,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778608568] [2020-12-17 20:26:22,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-12-17 20:26:22,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:26:22,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-12-17 20:26:22,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2020-12-17 20:26:22,391 INFO L87 Difference]: Start difference. First operand 818 states and 1410 transitions. Second operand has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:26:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:26:27,208 INFO L93 Difference]: Finished difference Result 823 states and 1415 transitions. [2020-12-17 20:26:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-12-17 20:26:27,209 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2020-12-17 20:26:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:26:27,210 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2020-12-17 20:26:27,210 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1415 transitions. Word has length 192 [2020-12-17 20:26:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:26:27,210 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1415 transitions. [2020-12-17 20:26:27,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:26:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1415 transitions. [2020-12-17 20:26:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-17 20:26:27,212 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:26:27,212 INFO L504 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 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] [2020-12-17 20:26:27,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-17 20:26:27,427 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:26:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:26:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1394487071, now seen corresponding path program 33 times [2020-12-17 20:26:27,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:26:27,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597288335] [2020-12-17 20:26:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:26:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:26:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2677 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:26:30,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597288335] [2020-12-17 20:26:30,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496374860] [2020-12-17 20:26:30,241 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:27:01,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2020-12-17 20:27:01,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:27:01,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-17 20:27:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:27:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2677 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:27:01,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:27:01,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2020-12-17 20:27:01,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953986196] [2020-12-17 20:27:01,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-12-17 20:27:01,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:27:01,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-12-17 20:27:01,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2020-12-17 20:27:01,673 INFO L87 Difference]: Start difference. First operand 823 states and 1415 transitions. Second operand has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:27:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:27:06,414 INFO L93 Difference]: Finished difference Result 828 states and 1420 transitions. [2020-12-17 20:27:06,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-12-17 20:27:06,415 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 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 197 [2020-12-17 20:27:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:27:06,416 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3519 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5852, Invalid=12780, Unknown=0, NotChecked=0, Total=18632 [2020-12-17 20:27:06,416 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1420 transitions. Word has length 197 [2020-12-17 20:27:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:27:06,417 INFO L481 AbstractCegarLoop]: Abstraction has 828 states and 1420 transitions. [2020-12-17 20:27:06,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:27:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1420 transitions. [2020-12-17 20:27:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-12-17 20:27:06,418 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:27:06,418 INFO L504 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 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] [2020-12-17 20:27:06,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-17 20:27:06,619 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:27:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:27:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1658165195, now seen corresponding path program 34 times [2020-12-17 20:27:06,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:27:06,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675065290] [2020-12-17 20:27:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:27:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:27:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2843 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:27:09,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675065290] [2020-12-17 20:27:09,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769810460] [2020-12-17 20:27:09,686 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:27:09,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:27:09,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:27:09,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-17 20:27:09,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:27:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2843 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:27:09,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:27:09,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2020-12-17 20:27:09,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295325876] [2020-12-17 20:27:09,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-12-17 20:27:09,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:27:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-12-17 20:27:09,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2020-12-17 20:27:09,961 INFO L87 Difference]: Start difference. First operand 828 states and 1420 transitions. Second operand has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:27:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:27:15,488 INFO L93 Difference]: Finished difference Result 833 states and 1425 transitions. [2020-12-17 20:27:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-12-17 20:27:15,489 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 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 [2020-12-17 20:27:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:27:15,490 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2020-12-17 20:27:15,490 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1425 transitions. Word has length 202 [2020-12-17 20:27:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:27:15,491 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 1425 transitions. [2020-12-17 20:27:15,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:27:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1425 transitions. [2020-12-17 20:27:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-17 20:27:15,492 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:27:15,492 INFO L504 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 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] [2020-12-17 20:27:15,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-17 20:27:15,706 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:27:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:27:15,706 INFO L82 PathProgramCache]: Analyzing trace with hash 610561247, now seen corresponding path program 35 times [2020-12-17 20:27:15,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:27:15,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872701913] [2020-12-17 20:27:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:27:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:27:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:27:18,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872701913] [2020-12-17 20:27:18,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797948054] [2020-12-17 20:27:18,887 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:27:50,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2020-12-17 20:27:50,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:27:51,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-17 20:27:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:27:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:27:51,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:27:51,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2020-12-17 20:27:51,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804109703] [2020-12-17 20:27:51,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-17 20:27:51,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:27:51,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-17 20:27:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2020-12-17 20:27:51,342 INFO L87 Difference]: Start difference. First operand 833 states and 1425 transitions. Second operand has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:27:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:27:56,815 INFO L93 Difference]: Finished difference Result 838 states and 1430 transitions. [2020-12-17 20:27:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-12-17 20:27:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 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 207 [2020-12-17 20:27:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:27:56,817 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=6556, Invalid=14324, Unknown=0, NotChecked=0, Total=20880 [2020-12-17 20:27:56,817 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1430 transitions. Word has length 207 [2020-12-17 20:27:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:27:56,817 INFO L481 AbstractCegarLoop]: Abstraction has 838 states and 1430 transitions. [2020-12-17 20:27:56,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:27:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1430 transitions. [2020-12-17 20:27:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-12-17 20:27:56,818 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:27:56,818 INFO L504 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 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] [2020-12-17 20:27:57,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-17 20:27:57,019 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:27:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:27:57,020 INFO L82 PathProgramCache]: Analyzing trace with hash 115655285, now seen corresponding path program 36 times [2020-12-17 20:27:57,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:27:57,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83451243] [2020-12-17 20:27:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:27:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:28:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:28:00,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83451243] [2020-12-17 20:28:00,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237164564] [2020-12-17 20:28:00,313 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:28:45,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2020-12-17 20:28:45,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:28:45,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 74 conjunts are in the unsatisfiable core [2020-12-17 20:28:45,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:28:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:28:45,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:28:45,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2020-12-17 20:28:45,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057590] [2020-12-17 20:28:45,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-12-17 20:28:45,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:28:45,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-12-17 20:28:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2020-12-17 20:28:45,733 INFO L87 Difference]: Start difference. First operand 838 states and 1430 transitions. Second operand has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 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) [2020-12-17 20:28:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:28:51,629 INFO L93 Difference]: Finished difference Result 843 states and 1435 transitions. [2020-12-17 20:28:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-12-17 20:28:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 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 212 [2020-12-17 20:28:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:28:51,631 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4164 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=6923, Invalid=15129, Unknown=0, NotChecked=0, Total=22052 [2020-12-17 20:28:51,631 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1435 transitions. Word has length 212 [2020-12-17 20:28:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:28:51,632 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1435 transitions. [2020-12-17 20:28:51,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 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) [2020-12-17 20:28:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1435 transitions. [2020-12-17 20:28:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-17 20:28:51,633 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:28:51,633 INFO L504 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 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] [2020-12-17 20:28:51,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-17 20:28:51,834 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:28:51,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:28:51,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1068991841, now seen corresponding path program 37 times [2020-12-17 20:28:51,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:28:51,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134106059] [2020-12-17 20:28:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:28:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:28:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:28:55,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134106059] [2020-12-17 20:28:55,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891842548] [2020-12-17 20:28:55,405 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:28:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:28:55,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-17 20:28:55,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:28:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:28:55,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:28:55,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2020-12-17 20:28:55,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359274521] [2020-12-17 20:28:55,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-12-17 20:28:55,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:28:55,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-12-17 20:28:55,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2020-12-17 20:28:55,675 INFO L87 Difference]: Start difference. First operand 843 states and 1435 transitions. Second operand has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:01,326 INFO L93 Difference]: Finished difference Result 848 states and 1440 transitions. [2020-12-17 20:29:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-12-17 20:29:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 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 217 [2020-12-17 20:29:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:01,329 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2020-12-17 20:29:01,329 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1440 transitions. Word has length 217 [2020-12-17 20:29:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:01,330 INFO L481 AbstractCegarLoop]: Abstraction has 848 states and 1440 transitions. [2020-12-17 20:29:01,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1440 transitions. [2020-12-17 20:29:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-17 20:29:01,332 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:01,332 INFO L504 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 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] [2020-12-17 20:29:01,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-17 20:29:01,547 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:29:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1339863883, now seen corresponding path program 38 times [2020-12-17 20:29:01,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:01,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763815671] [2020-12-17 20:29:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3557 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:29:05,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763815671] [2020-12-17 20:29:05,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347882640] [2020-12-17 20:29:05,386 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:29:05,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 20:29:05,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:05,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-17 20:29:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3557 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:29:05,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:05,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2020-12-17 20:29:05,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903676923] [2020-12-17 20:29:05,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-12-17 20:29:05,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:05,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-12-17 20:29:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2020-12-17 20:29:05,669 INFO L87 Difference]: Start difference. First operand 848 states and 1440 transitions. Second operand has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:12,333 INFO L93 Difference]: Finished difference Result 853 states and 1445 transitions. [2020-12-17 20:29:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-12-17 20:29:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 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 222 [2020-12-17 20:29:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:12,335 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2020-12-17 20:29:12,335 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1445 transitions. Word has length 222 [2020-12-17 20:29:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:12,336 INFO L481 AbstractCegarLoop]: Abstraction has 853 states and 1445 transitions. [2020-12-17 20:29:12,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1445 transitions. [2020-12-17 20:29:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-12-17 20:29:12,337 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:12,337 INFO L504 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 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] [2020-12-17 20:29:12,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-17 20:29:12,552 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:29:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash 398874719, now seen corresponding path program 39 times [2020-12-17 20:29:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:12,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385567992] [2020-12-17 20:29:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:29:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:29:16,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385567992] [2020-12-17 20:29:16,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944805240] [2020-12-17 20:29:16,662 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:29:48,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-12-17 20:29:48,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:29:48,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-17 20:29:48,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:29:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:29:48,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:29:48,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2020-12-17 20:29:48,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321127849] [2020-12-17 20:29:48,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-12-17 20:29:48,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:29:48,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-12-17 20:29:48,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2020-12-17 20:29:48,826 INFO L87 Difference]: Start difference. First operand 853 states and 1445 transitions. Second operand has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:29:55,625 INFO L93 Difference]: Finished difference Result 858 states and 1450 transitions. [2020-12-17 20:29:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-12-17 20:29:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 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 227 [2020-12-17 20:29:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:29:55,627 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4863 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=8084, Invalid=17676, Unknown=0, NotChecked=0, Total=25760 [2020-12-17 20:29:55,628 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1450 transitions. Word has length 227 [2020-12-17 20:29:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:29:55,628 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 1450 transitions. [2020-12-17 20:29:55,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:29:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1450 transitions. [2020-12-17 20:29:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-12-17 20:29:55,629 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:29:55,629 INFO L504 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 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] [2020-12-17 20:29:55,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:29:55,841 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:29:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:29:55,843 INFO L82 PathProgramCache]: Analyzing trace with hash -446036235, now seen corresponding path program 40 times [2020-12-17 20:29:55,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:29:55,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470369203] [2020-12-17 20:29:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:29:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3944 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:30:00,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470369203] [2020-12-17 20:30:00,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640206137] [2020-12-17 20:30:00,427 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:00,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 20:30:00,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:30:00,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 82 conjunts are in the unsatisfiable core [2020-12-17 20:30:00,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:30:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3944 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:30:00,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:30:00,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2020-12-17 20:30:00,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309345866] [2020-12-17 20:30:00,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-12-17 20:30:00,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:30:00,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-12-17 20:30:00,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2020-12-17 20:30:00,826 INFO L87 Difference]: Start difference. First operand 858 states and 1450 transitions. Second operand has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:30:08,082 INFO L93 Difference]: Finished difference Result 863 states and 1455 transitions. [2020-12-17 20:30:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-12-17 20:30:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 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 [2020-12-17 20:30:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:30:08,085 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5108 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=8491, Invalid=18569, Unknown=0, NotChecked=0, Total=27060 [2020-12-17 20:30:08,085 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1455 transitions. Word has length 232 [2020-12-17 20:30:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:30:08,085 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 1455 transitions. [2020-12-17 20:30:08,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 20:30:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1455 transitions. [2020-12-17 20:30:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-17 20:30:08,086 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:30:08,086 INFO L504 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 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] [2020-12-17 20:30:08,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:30:08,301 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:30:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:30:08,301 INFO L82 PathProgramCache]: Analyzing trace with hash 282723871, now seen corresponding path program 41 times [2020-12-17 20:30:08,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:30:08,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207888851] [2020-12-17 20:30:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:30:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:30:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:30:13,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207888851] [2020-12-17 20:30:13,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944959160] [2020-12-17 20:30:13,136 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 20:33:02,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-12-17 20:33:02,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 20:33:06,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-17 20:33:06,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 20:33:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:33:06,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 20:33:06,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2020-12-17 20:33:06,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983655835] [2020-12-17 20:33:06,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-12-17 20:33:06,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 20:33:06,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-12-17 20:33:06,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2020-12-17 20:33:06,946 INFO L87 Difference]: Start difference. First operand 863 states and 1455 transitions. Second operand has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 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) [2020-12-17 20:33:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 20:33:16,101 INFO L93 Difference]: Finished difference Result 868 states and 1460 transitions. [2020-12-17 20:33:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-12-17 20:33:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 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 237 [2020-12-17 20:33:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 20:33:16,104 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=8908, Invalid=19484, Unknown=0, NotChecked=0, Total=28392 [2020-12-17 20:33:16,104 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1460 transitions. Word has length 237 [2020-12-17 20:33:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 20:33:16,104 INFO L481 AbstractCegarLoop]: Abstraction has 868 states and 1460 transitions. [2020-12-17 20:33:16,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 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) [2020-12-17 20:33:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1460 transitions. [2020-12-17 20:33:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-17 20:33:16,106 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 20:33:16,106 INFO L504 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 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] [2020-12-17 20:33:16,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-17 20:33:16,307 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-17 20:33:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 20:33:16,308 INFO L82 PathProgramCache]: Analyzing trace with hash 507310389, now seen corresponding path program 42 times [2020-12-17 20:33:16,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 20:33:16,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710806067] [2020-12-17 20:33:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 20:33:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 20:33:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4351 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-17 20:33:22,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710806067] [2020-12-17 20:33:22,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973628557] [2020-12-17 20:33:22,277 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown