/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 19:38:07,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 19:38:07,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 19:38:07,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 19:38:07,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 19:38:07,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 19:38:07,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 19:38:07,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 19:38:07,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 19:38:07,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 19:38:07,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 19:38:07,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 19:38:07,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 19:38:07,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 19:38:07,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 19:38:07,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 19:38:07,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 19:38:07,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 19:38:07,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 19:38:07,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 19:38:07,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 19:38:07,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 19:38:07,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 19:38:07,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 19:38:07,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 19:38:07,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 19:38:07,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 19:38:07,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 19:38:07,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 19:38:07,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 19:38:07,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 19:38:07,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 19:38:07,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 19:38:07,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 19:38:07,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 19:38:07,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 19:38:07,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 19:38:07,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 19:38:07,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 19:38:07,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 19:38:07,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 19:38:07,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 19:38:07,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 19:38:07,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 19:38:07,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 19:38:07,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 19:38:07,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 19:38:07,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 19:38:07,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 19:38:07,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 19:38:07,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 19:38:07,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 19:38:07,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 19:38:07,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 19:38:07,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 19:38:07,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 19:38:07,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 19:38:07,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 19:38:07,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 19:38:07,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 19:38:07,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 19:38:07,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 19:38:07,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 19:38:07,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:38:07,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 19:38:07,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 19:38:07,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 19:38:07,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 19:38:07,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 19:38:07,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 19:38:07,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 19:38:07,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 19:38:08,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 19:38:08,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 19:38:08,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 19:38:08,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 19:38:08,126 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 19:38:08,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-15 19:38:08,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75c8a6d56/d53cd5821a7b45098631b9841b984d14/FLAG6959f3d81 [2020-10-15 19:38:08,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 19:38:08,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-15 19:38:08,639 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 19:38:08,640 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 19:38:08,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75c8a6d56/d53cd5821a7b45098631b9841b984d14/FLAG6959f3d81 [2020-10-15 19:38:08,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75c8a6d56/d53cd5821a7b45098631b9841b984d14 [2020-10-15 19:38:09,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 19:38:09,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 19:38:09,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 19:38:09,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 19:38:09,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 19:38:09,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:08" (1/1) ... [2020-10-15 19:38:09,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4ecd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09, skipping insertion in model container [2020-10-15 19:38:09,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:08" (1/1) ... [2020-10-15 19:38:09,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 19:38:09,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 19:38:09,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:38:09,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 19:38:09,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:38:09,377 INFO L208 MainTranslator]: Completed translation [2020-10-15 19:38:09,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09 WrapperNode [2020-10-15 19:38:09,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 19:38:09,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 19:38:09,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 19:38:09,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 19:38:09,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 19:38:09,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 19:38:09,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 19:38:09,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 19:38:09,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (1/1) ... [2020-10-15 19:38:09,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 19:38:09,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 19:38:09,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 19:38:09,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 19:38:09,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (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 [2020-10-15 19:38:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 19:38:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-15 19:38:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-15 19:38:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 19:38:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 19:38:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 19:38:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 19:38:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 19:38:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 19:38:09,508 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 19:38:09,856 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 19:38:09,856 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-15 19:38:09,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:09 BoogieIcfgContainer [2020-10-15 19:38:09,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 19:38:09,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 19:38:09,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 19:38:09,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 19:38:09,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:38:08" (1/3) ... [2020-10-15 19:38:09,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6a266e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:09, skipping insertion in model container [2020-10-15 19:38:09,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:09" (2/3) ... [2020-10-15 19:38:09,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6a266e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:09, skipping insertion in model container [2020-10-15 19:38:09,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:09" (3/3) ... [2020-10-15 19:38:09,867 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-15 19:38:09,887 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 19:38:09,890 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 19:38:09,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 19:38:09,906 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 19:38:09,946 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,946 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,948 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,948 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,948 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,948 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,949 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,949 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,949 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,949 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,949 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,949 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,950 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,950 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,950 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,950 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,951 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,951 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,951 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,951 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,952 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,952 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,952 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,953 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,953 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,953 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,953 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,954 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,954 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,955 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,955 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,955 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,955 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,956 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,956 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,956 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,956 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,956 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,957 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,957 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,957 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,957 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,957 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,958 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,958 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,958 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,958 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,959 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,959 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,959 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,959 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,960 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,960 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,960 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,960 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,960 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,961 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,961 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,961 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,961 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,962 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,962 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,962 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,962 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,963 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,963 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,963 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,963 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,964 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,964 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,964 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,964 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,965 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,968 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,969 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,969 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,969 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,969 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,969 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,970 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,970 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,970 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,970 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,971 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,971 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,971 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,977 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,977 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,977 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,978 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,978 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,978 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,978 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,978 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,979 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,979 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,979 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,979 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:09,979 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:10,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 19:38:10,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:38:10,021 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:38:10,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:38:10,021 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:38:10,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:38:10,021 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:38:10,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:38:10,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:38:10,039 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:38:10,041 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-15 19:38:10,044 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-15 19:38:10,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-15 19:38:10,122 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-15 19:38:10,122 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 19:38:10,128 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-10-15 19:38:10,134 INFO L117 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-15 19:38:12,215 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-15 19:38:12,337 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-15 19:38:13,071 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-15 19:38:13,079 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-15 19:38:13,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:13,593 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-15 19:38:13,770 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-15 19:38:13,992 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-15 19:38:14,189 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-15 19:38:14,198 INFO L132 LiptonReduction]: Checked pairs total: 4040 [2020-10-15 19:38:14,198 INFO L134 LiptonReduction]: Total number of compositions: 125 [2020-10-15 19:38:14,205 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-15 19:38:14,220 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-15 19:38:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-15 19:38:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:38:14,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:14,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:14,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:14,239 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-15 19:38:14,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:14,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474850332] [2020-10-15 19:38:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:14,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474850332] [2020-10-15 19:38:14,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:14,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:38:14,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295030818] [2020-10-15 19:38:14,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:38:14,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:38:14,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:38:14,491 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-15 19:38:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:14,618 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-15 19:38:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:38:14,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 19:38:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:14,632 INFO L225 Difference]: With dead ends: 126 [2020-10-15 19:38:14,633 INFO L226 Difference]: Without dead ends: 104 [2020-10-15 19:38:14,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:38:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-15 19:38:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-15 19:38:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-15 19:38:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-15 19:38:14,682 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-15 19:38:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:14,683 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-15 19:38:14,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:38:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-15 19:38:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:38:14,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:14,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:14,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 19:38:14,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-15 19:38:14,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:14,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002366235] [2020-10-15 19:38:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:14,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002366235] [2020-10-15 19:38:14,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:14,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:38:14,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596227703] [2020-10-15 19:38:14,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:38:14,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:14,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:38:14,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:38:14,822 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-15 19:38:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:14,870 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-15 19:38:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:38:14,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-15 19:38:14,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:14,874 INFO L225 Difference]: With dead ends: 170 [2020-10-15 19:38:14,874 INFO L226 Difference]: Without dead ends: 163 [2020-10-15 19:38:14,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:38:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-15 19:38:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-15 19:38:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:38:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-15 19:38:14,891 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-15 19:38:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:14,891 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-15 19:38:14,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:38:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-15 19:38:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:38:14,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:14,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:14,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 19:38:14,894 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:14,895 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-15 19:38:14,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:14,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518290269] [2020-10-15 19:38:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:15,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518290269] [2020-10-15 19:38:15,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454527127] [2020-10-15 19:38:15,120 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 [2020-10-15 19:38:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:15,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-15 19:38:15,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:38:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:15,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:38:15,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-15 19:38:15,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681634897] [2020-10-15 19:38:15,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 19:38:15,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:15,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 19:38:15,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 19:38:15,271 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-15 19:38:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:15,456 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-15 19:38:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:38:15,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-15 19:38:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:15,458 INFO L225 Difference]: With dead ends: 202 [2020-10-15 19:38:15,458 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 19:38:15,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:38:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 19:38:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-15 19:38:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 19:38:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-15 19:38:15,470 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-15 19:38:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:15,470 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-15 19:38:15,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 19:38:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-15 19:38:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:38:15,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:15,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:15,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-15 19:38:15,688 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-15 19:38:15,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:15,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244923113] [2020-10-15 19:38:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:16,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244923113] [2020-10-15 19:38:16,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:16,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:38:16,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146298205] [2020-10-15 19:38:16,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:38:16,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:38:16,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:38:16,372 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-15 19:38:16,600 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 19:38:16,812 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 19:38:17,095 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 19:38:17,406 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-15 19:38:17,751 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-15 19:38:18,073 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-15 19:38:18,252 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-15 19:38:18,508 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-15 19:38:18,850 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-15 19:38:19,103 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-15 19:38:19,262 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-15 19:38:19,573 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-15 19:38:19,850 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-15 19:38:20,103 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-15 19:38:20,467 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-15 19:38:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:20,573 INFO L93 Difference]: Finished difference Result 305 states and 837 transitions. [2020-10-15 19:38:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:38:20,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 19:38:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:20,576 INFO L225 Difference]: With dead ends: 305 [2020-10-15 19:38:20,576 INFO L226 Difference]: Without dead ends: 245 [2020-10-15 19:38:20,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:38:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-15 19:38:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 110. [2020-10-15 19:38:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 19:38:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 288 transitions. [2020-10-15 19:38:20,588 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 288 transitions. Word has length 20 [2020-10-15 19:38:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:20,588 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 288 transitions. [2020-10-15 19:38:20,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:38:20,588 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 288 transitions. [2020-10-15 19:38:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:38:20,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:20,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:20,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 19:38:20,590 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:20,591 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-15 19:38:20,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:20,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460137662] [2020-10-15 19:38:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:21,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460137662] [2020-10-15 19:38:21,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:21,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:38:21,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055708565] [2020-10-15 19:38:21,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:38:21,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:21,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:38:21,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:38:21,147 INFO L87 Difference]: Start difference. First operand 110 states and 288 transitions. Second operand 10 states. [2020-10-15 19:38:21,395 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 19:38:21,605 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 19:38:21,879 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 19:38:22,231 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-15 19:38:22,628 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-15 19:38:23,133 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-15 19:38:23,435 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-15 19:38:23,632 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-15 19:38:23,887 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-15 19:38:24,188 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-15 19:38:24,594 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-15 19:38:25,046 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-15 19:38:25,355 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-15 19:38:25,680 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-15 19:38:26,034 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-15 19:38:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:26,107 INFO L93 Difference]: Finished difference Result 414 states and 1136 transitions. [2020-10-15 19:38:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:38:26,108 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 19:38:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:26,111 INFO L225 Difference]: With dead ends: 414 [2020-10-15 19:38:26,112 INFO L226 Difference]: Without dead ends: 382 [2020-10-15 19:38:26,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-15 19:38:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-15 19:38:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 116. [2020-10-15 19:38:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 19:38:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 301 transitions. [2020-10-15 19:38:26,123 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 301 transitions. Word has length 20 [2020-10-15 19:38:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:26,123 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 301 transitions. [2020-10-15 19:38:26,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:38:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 301 transitions. [2020-10-15 19:38:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:38:26,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:26,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:26,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 19:38:26,126 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-15 19:38:26,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:26,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095377895] [2020-10-15 19:38:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:26,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095377895] [2020-10-15 19:38:26,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:26,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:38:26,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158735786] [2020-10-15 19:38:26,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:38:26,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:38:26,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:38:26,713 INFO L87 Difference]: Start difference. First operand 116 states and 301 transitions. Second operand 10 states. [2020-10-15 19:38:26,945 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 19:38:27,146 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 19:38:27,405 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 19:38:27,761 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-15 19:38:28,198 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-15 19:38:28,753 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-15 19:38:29,057 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-15 19:38:29,269 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-15 19:38:29,535 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-15 19:38:29,947 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-15 19:38:30,420 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-15 19:38:30,829 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-15 19:38:31,096 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-15 19:38:31,224 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-15 19:38:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:31,286 INFO L93 Difference]: Finished difference Result 320 states and 886 transitions. [2020-10-15 19:38:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:38:31,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 19:38:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:31,290 INFO L225 Difference]: With dead ends: 320 [2020-10-15 19:38:31,290 INFO L226 Difference]: Without dead ends: 318 [2020-10-15 19:38:31,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:38:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-15 19:38:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 118. [2020-10-15 19:38:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 19:38:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2020-10-15 19:38:31,298 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 20 [2020-10-15 19:38:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:31,299 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2020-10-15 19:38:31,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:38:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2020-10-15 19:38:31,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:38:31,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:31,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:31,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 19:38:31,301 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:31,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-15 19:38:31,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:31,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064326642] [2020-10-15 19:38:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:31,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064326642] [2020-10-15 19:38:31,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:31,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:38:31,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687136507] [2020-10-15 19:38:31,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:38:31,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:38:31,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:38:31,869 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand 10 states. [2020-10-15 19:38:32,128 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 19:38:32,352 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 19:38:32,619 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 19:38:32,904 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-15 19:38:33,258 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-15 19:38:33,521 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-15 19:38:33,830 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-10-15 19:38:34,250 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-15 19:38:34,630 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2020-10-15 19:38:35,083 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-15 19:38:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:35,189 INFO L93 Difference]: Finished difference Result 278 states and 749 transitions. [2020-10-15 19:38:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:38:35,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 19:38:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:35,193 INFO L225 Difference]: With dead ends: 278 [2020-10-15 19:38:35,193 INFO L226 Difference]: Without dead ends: 278 [2020-10-15 19:38:35,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:38:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-15 19:38:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122. [2020-10-15 19:38:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 19:38:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2020-10-15 19:38:35,211 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 20 [2020-10-15 19:38:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:35,211 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2020-10-15 19:38:35,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:38:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2020-10-15 19:38:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:38:35,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:35,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:35,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 19:38:35,213 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-15 19:38:35,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:35,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924912297] [2020-10-15 19:38:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:35,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924912297] [2020-10-15 19:38:35,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344837559] [2020-10-15 19:38:35,520 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 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 [2020-10-15 19:38:35,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:38:35,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:38:35,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-15 19:38:35,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:38:35,690 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 19:38:35,690 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 75 [2020-10-15 19:38:35,693 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-15 19:38:35,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:35,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:35,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:35,707 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-15 19:38:35,800 INFO L625 ElimStorePlain]: treesize reduction 97, result has 37.0 percent of original size [2020-10-15 19:38:35,809 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-15 19:38:35,810 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-15 19:38:35,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 19:38:35,838 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 19:38:35,838 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:53 [2020-10-15 19:38:35,953 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-15 19:38:35,955 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 19:38:35,984 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 19:38:35,988 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 19:38:35,989 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:60 [2020-10-15 19:38:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:36,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:38:36,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2020-10-15 19:38:36,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540662781] [2020-10-15 19:38:36,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:38:36,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:36,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:38:36,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:38:36,569 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand 17 states. [2020-10-15 19:38:37,383 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-15 19:38:37,703 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-15 19:38:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:38,042 INFO L93 Difference]: Finished difference Result 243 states and 654 transitions. [2020-10-15 19:38:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:38:38,043 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-15 19:38:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:38,045 INFO L225 Difference]: With dead ends: 243 [2020-10-15 19:38:38,045 INFO L226 Difference]: Without dead ends: 224 [2020-10-15 19:38:38,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:38:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-15 19:38:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 176. [2020-10-15 19:38:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-15 19:38:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 481 transitions. [2020-10-15 19:38:38,052 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 481 transitions. Word has length 20 [2020-10-15 19:38:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:38,052 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 481 transitions. [2020-10-15 19:38:38,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:38:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 481 transitions. [2020-10-15 19:38:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 19:38:38,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:38,054 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:38,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:38:38,262 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:38,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-15 19:38:38,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:38,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068013149] [2020-10-15 19:38:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:38,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068013149] [2020-10-15 19:38:38,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958035440] [2020-10-15 19:38:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-15 19:38:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:38,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-15 19:38:38,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:38:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:38:38,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:38:38,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 11 [2020-10-15 19:38:38,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721779340] [2020-10-15 19:38:38,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:38:38,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:38,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:38:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:38:38,696 INFO L87 Difference]: Start difference. First operand 176 states and 481 transitions. Second operand 13 states. [2020-10-15 19:38:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:39,926 INFO L93 Difference]: Finished difference Result 491 states and 1335 transitions. [2020-10-15 19:38:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:38:39,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-15 19:38:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:39,928 INFO L225 Difference]: With dead ends: 491 [2020-10-15 19:38:39,928 INFO L226 Difference]: Without dead ends: 109 [2020-10-15 19:38:39,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:38:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-15 19:38:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-10-15 19:38:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 19:38:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2020-10-15 19:38:39,932 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 22 [2020-10-15 19:38:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:39,932 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2020-10-15 19:38:39,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:38:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2020-10-15 19:38:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 19:38:39,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:39,933 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:40,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:38:40,145 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1587846356, now seen corresponding path program 2 times [2020-10-15 19:38:40,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:40,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397424989] [2020-10-15 19:38:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397424989] [2020-10-15 19:38:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090176446] [2020-10-15 19:38:40,449 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 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 [2020-10-15 19:38:40,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:38:40,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:38:40,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-15 19:38:40,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:38:40,525 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2020-10-15 19:38:40,527 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 19:38:40,556 INFO L625 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-10-15 19:38:40,557 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 19:38:40,557 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-15 19:38:40,613 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-15 19:38:40,614 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 19:38:40,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 19:38:40,623 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 19:38:40,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-15 19:38:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:38:40,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:38:40,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-15 19:38:40,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193351685] [2020-10-15 19:38:40,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 19:38:40,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:40,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 19:38:40,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:38:40,719 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand 14 states. [2020-10-15 19:38:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:41,889 INFO L93 Difference]: Finished difference Result 187 states and 417 transitions. [2020-10-15 19:38:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:38:41,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-15 19:38:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:41,890 INFO L225 Difference]: With dead ends: 187 [2020-10-15 19:38:41,890 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 19:38:41,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:38:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 19:38:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-15 19:38:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 19:38:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-15 19:38:41,894 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 22 [2020-10-15 19:38:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:41,894 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-15 19:38:41,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 19:38:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-15 19:38:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 19:38:41,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:41,895 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:42,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:38:42,099 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1188207356, now seen corresponding path program 3 times [2020-10-15 19:38:42,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:42,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518611466] [2020-10-15 19:38:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:42,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518611466] [2020-10-15 19:38:42,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086118361] [2020-10-15 19:38:42,422 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 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 [2020-10-15 19:38:42,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:38:42,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:38:42,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-15 19:38:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:38:42,562 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 19:38:42,563 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 72 [2020-10-15 19:38:42,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:42,567 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-15 19:38:42,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:42,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:38:42,572 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 19:38:42,630 INFO L625 ElimStorePlain]: treesize reduction 139, result has 13.7 percent of original size [2020-10-15 19:38:42,631 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 19:38:42,631 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2020-10-15 19:38:42,720 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-15 19:38:42,721 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 19:38:42,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 19:38:42,730 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 19:38:42,730 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-15 19:38:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:38:42,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:38:42,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 13 [2020-10-15 19:38:42,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204789927] [2020-10-15 19:38:42,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:38:42,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:38:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:38:42,786 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 15 states. [2020-10-15 19:38:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:44,372 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-10-15 19:38:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 19:38:44,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-10-15 19:38:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:44,373 INFO L225 Difference]: With dead ends: 104 [2020-10-15 19:38:44,374 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 19:38:44,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:38:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 19:38:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 19:38:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 19:38:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 19:38:44,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-15 19:38:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:44,375 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 19:38:44,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:38:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 19:38:44,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 19:38:44,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 19:38:44,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:38:44 BasicIcfg [2020-10-15 19:38:44,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 19:38:44,582 INFO L168 Benchmark]: Toolchain (without parser) took 35573.67 ms. Allocated memory was 253.8 MB in the beginning and 572.5 MB in the end (delta: 318.8 MB). Free memory was 207.0 MB in the beginning and 270.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 255.5 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:44,582 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 253.8 MB. Free memory is still 227.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 19:38:44,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.58 ms. Allocated memory was 253.8 MB in the beginning and 317.2 MB in the end (delta: 63.4 MB). Free memory was 207.0 MB in the beginning and 288.8 MB in the end (delta: -81.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:44,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 317.2 MB. Free memory is still 288.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 19:38:44,584 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 317.2 MB. Free memory was 288.8 MB in the beginning and 286.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:44,584 INFO L168 Benchmark]: RCFGBuilder took 406.98 ms. Allocated memory is still 317.2 MB. Free memory was 286.3 MB in the beginning and 258.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:44,585 INFO L168 Benchmark]: TraceAbstraction took 34720.85 ms. Allocated memory was 317.2 MB in the beginning and 572.5 MB in the end (delta: 255.3 MB). Free memory was 258.5 MB in the beginning and 270.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 243.6 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:44,588 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 253.8 MB. Free memory is still 227.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 367.58 ms. Allocated memory was 253.8 MB in the beginning and 317.2 MB in the end (delta: 63.4 MB). Free memory was 207.0 MB in the beginning and 288.8 MB in the end (delta: -81.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 317.2 MB. Free memory is still 288.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 317.2 MB. Free memory was 288.8 MB in the beginning and 286.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 406.98 ms. Allocated memory is still 317.2 MB. Free memory was 286.3 MB in the beginning and 258.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. * TraceAbstraction took 34720.85 ms. Allocated memory was 317.2 MB in the beginning and 572.5 MB in the end (delta: 255.3 MB). Free memory was 258.5 MB in the beginning and 270.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 243.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1346 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 122 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 135 PlacesBefore, 31 PlacesAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 4040 MoverChecksTotal - PositiveResult [Line: 67]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.5s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 303 SDtfs, 1726 SDslu, 817 SDs, 0 SdLazy, 2476 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 919 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 326 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 310 ConstructedInterpolants, 40 QuantifiedInterpolants, 139420 SizeOfPredicates, 73 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 14/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...