/usr/bin/java -Xmx8000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:19:18,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:19:18,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:19:18,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:19:18,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:19:18,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:19:18,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:19:18,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:19:18,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:19:18,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:19:18,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:19:18,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:19:18,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:19:18,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:19:18,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:19:18,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:19:18,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:19:18,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:19:18,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:19:18,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:19:18,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:19:18,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:19:18,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:19:18,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:19:18,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 23:19:18,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 23:19:18,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 23:19:18,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 23:19:18,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 23:19:18,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 23:19:18,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:19:18,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:19:18,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:19:18,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:19:18,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:19:18,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:19:18,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:19:18,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:19:18,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:19:18,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:19:18,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:19:18,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 23:19:18,844 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:19:18,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:19:18,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:19:18,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:19:18,849 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:19:18,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:19:18,849 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:19:18,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:19:18,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:19:18,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:19:18,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:19:18,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:19:18,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:19:18,852 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:19:18,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:19:18,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:19:18,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:19:18,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:19:18,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:19:18,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:19:18,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:19:18,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:19:18,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:19:18,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:19:18,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:19:18,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:19:18,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:19:18,855 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 23:19:18,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:19:18,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:19:19,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:19:19,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:19:19,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:19:19,142 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:19:19,142 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:19:19,142 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-18 23:19:19,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c2007b0/12a0e5b40e4349059969a127f2ce23d4/FLAG586b0fedd [2019-12-18 23:19:19,782 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:19:19,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-18 23:19:19,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c2007b0/12a0e5b40e4349059969a127f2ce23d4/FLAG586b0fedd [2019-12-18 23:19:20,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c2007b0/12a0e5b40e4349059969a127f2ce23d4 [2019-12-18 23:19:20,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:19:20,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:19:20,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:19:20,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:19:20,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:19:20,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:19:20" (1/1) ... [2019-12-18 23:19:20,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420055d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:20, skipping insertion in model container [2019-12-18 23:19:20,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:19:20" (1/1) ... [2019-12-18 23:19:20,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:19:20,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:19:20,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:19:20,724 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:19:20,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:19:21,021 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:19:21,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21 WrapperNode [2019-12-18 23:19:21,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:19:21,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:19:21,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:19:21,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:19:21,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:19:21,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:19:21,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:19:21,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:19:21,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (1/1) ... [2019-12-18 23:19:21,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:19:21,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:19:21,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:19:21,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:19:21,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (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 [2019-12-18 23:19:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:19:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:19:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 23:19:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2019-12-18 23:19:21,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2019-12-18 23:19:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:19:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:19:21,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:19:21,209 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:19:21,678 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:19:21,678 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-18 23:19:21,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:19:21 BoogieIcfgContainer [2019-12-18 23:19:21,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:19:21,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:19:21,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:19:21,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:19:21,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:19:20" (1/3) ... [2019-12-18 23:19:21,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4fe033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:19:21, skipping insertion in model container [2019-12-18 23:19:21,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:19:21" (2/3) ... [2019-12-18 23:19:21,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4fe033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:19:21, skipping insertion in model container [2019-12-18 23:19:21,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:19:21" (3/3) ... [2019-12-18 23:19:21,687 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2019-12-18 23:19:21,694 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:19:21,695 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:19:21,701 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:19:21,702 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:19:21,724 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,724 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,725 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,725 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,725 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,726 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,727 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,727 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,727 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,727 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,727 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,728 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,728 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,728 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,728 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,728 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,729 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,732 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,732 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,733 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,733 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,733 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,733 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,733 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,734 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:19:21,760 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:19:21,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:19:21,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:19:21,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:19:21,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:19:21,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:19:21,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:19:21,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:19:21,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:19:21,793 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions [2019-12-18 23:19:21,795 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-18 23:19:21,848 INFO L126 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-18 23:19:21,848 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:19:21,854 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 6/82 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-18 23:19:21,858 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-18 23:19:21,880 INFO L126 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-18 23:19:21,880 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:19:21,882 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 6/82 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-18 23:19:21,884 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2019-12-18 23:19:21,885 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:19:23,267 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-12-18 23:19:23,495 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-18 23:19:24,047 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-18 23:19:24,280 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-18 23:19:24,727 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-18 23:19:25,101 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-12-18 23:19:26,336 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2019-12-18 23:19:26,807 WARN L192 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-18 23:19:26,814 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2019-12-18 23:19:26,814 INFO L214 etLargeBlockEncoding]: Total number of compositions: 77 [2019-12-18 23:19:26,818 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 13 transitions [2019-12-18 23:19:26,826 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2019-12-18 23:19:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-18 23:19:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:19:26,836 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:26,836 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:26,837 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1101690005, now seen corresponding path program 1 times [2019-12-18 23:19:26,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:26,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734133240] [2019-12-18 23:19:26,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:27,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734133240] [2019-12-18 23:19:27,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:19:27,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:19:27,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282484269] [2019-12-18 23:19:27,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:19:27,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:27,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:19:27,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:19:27,115 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-18 23:19:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:27,155 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2019-12-18 23:19:27,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:19:27,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 23:19:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:27,178 INFO L225 Difference]: With dead ends: 20 [2019-12-18 23:19:27,179 INFO L226 Difference]: Without dead ends: 20 [2019-12-18 23:19:27,181 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:19:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-18 23:19:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-18 23:19:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-18 23:19:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2019-12-18 23:19:27,216 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2019-12-18 23:19:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:27,217 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2019-12-18 23:19:27,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:19:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2019-12-18 23:19:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:19:27,218 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:27,218 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:27,218 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash -176981712, now seen corresponding path program 1 times [2019-12-18 23:19:27,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:27,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945430382] [2019-12-18 23:19:27,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:19:27,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945430382] [2019-12-18 23:19:27,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:19:27,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:19:27,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703855651] [2019-12-18 23:19:27,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:19:27,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:19:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:19:27,296 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2019-12-18 23:19:27,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:27,307 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2019-12-18 23:19:27,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:19:27,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 23:19:27,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:27,308 INFO L225 Difference]: With dead ends: 28 [2019-12-18 23:19:27,308 INFO L226 Difference]: Without dead ends: 28 [2019-12-18 23:19:27,309 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:19:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-18 23:19:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-12-18 23:19:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-18 23:19:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2019-12-18 23:19:27,313 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2019-12-18 23:19:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:27,314 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2019-12-18 23:19:27,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:19:27,314 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2019-12-18 23:19:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:19:27,315 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:27,315 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:27,315 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:27,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1360713053, now seen corresponding path program 1 times [2019-12-18 23:19:27,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:27,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128335542] [2019-12-18 23:19:27,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:27,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128335542] [2019-12-18 23:19:27,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497398569] [2019-12-18 23:19:27,420 INFO L94 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 [2019-12-18 23:19:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:27,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-18 23:19:27,503 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:19:27,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:27,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-18 23:19:27,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129877103] [2019-12-18 23:19:27,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:19:27,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:19:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:19:27,535 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 8 states. [2019-12-18 23:19:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:27,769 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2019-12-18 23:19:27,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-18 23:19:27,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-18 23:19:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:27,771 INFO L225 Difference]: With dead ends: 64 [2019-12-18 23:19:27,771 INFO L226 Difference]: Without dead ends: 64 [2019-12-18 23:19:27,772 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2019-12-18 23:19:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-18 23:19:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-12-18 23:19:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 23:19:27,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2019-12-18 23:19:27,780 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 60 transitions. Word has length 11 [2019-12-18 23:19:27,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:27,781 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 60 transitions. [2019-12-18 23:19:27,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:19:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 60 transitions. [2019-12-18 23:19:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 23:19:27,784 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:27,784 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:27,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:27,988 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1616632394, now seen corresponding path program 2 times [2019-12-18 23:19:27,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:27,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241404034] [2019-12-18 23:19:27,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:28,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241404034] [2019-12-18 23:19:28,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63808799] [2019-12-18 23:19:28,153 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:28,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 23:19:28,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:28,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:19:28,256 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:19:28,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:28,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-12-18 23:19:28,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998766383] [2019-12-18 23:19:28,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-18 23:19:28,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:28,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-18 23:19:28,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-12-18 23:19:28,292 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand 11 states. [2019-12-18 23:19:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:28,766 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2019-12-18 23:19:28,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-18 23:19:28,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-18 23:19:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:28,768 INFO L225 Difference]: With dead ends: 112 [2019-12-18 23:19:28,768 INFO L226 Difference]: Without dead ends: 112 [2019-12-18 23:19:28,769 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=1037, Unknown=0, NotChecked=0, Total=1482 [2019-12-18 23:19:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-18 23:19:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 40. [2019-12-18 23:19:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-18 23:19:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2019-12-18 23:19:28,778 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 13 [2019-12-18 23:19:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:28,778 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2019-12-18 23:19:28,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-18 23:19:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2019-12-18 23:19:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 23:19:28,779 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:28,779 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:28,983 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:28,984 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:28,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1552984073, now seen corresponding path program 3 times [2019-12-18 23:19:28,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:28,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648469202] [2019-12-18 23:19:28,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:29,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648469202] [2019-12-18 23:19:29,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340923383] [2019-12-18 23:19:29,103 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:29,186 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-18 23:19:29,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:29,188 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-18 23:19:29,190 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 23:19:29,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:29,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2019-12-18 23:19:29,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697531828] [2019-12-18 23:19:29,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-18 23:19:29,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:29,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-18 23:19:29,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-12-18 23:19:29,216 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 12 states. [2019-12-18 23:19:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:29,844 INFO L93 Difference]: Finished difference Result 200 states and 392 transitions. [2019-12-18 23:19:29,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-18 23:19:29,844 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-12-18 23:19:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:29,847 INFO L225 Difference]: With dead ends: 200 [2019-12-18 23:19:29,847 INFO L226 Difference]: Without dead ends: 196 [2019-12-18 23:19:29,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2019-12-18 23:19:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-12-18 23:19:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 65. [2019-12-18 23:19:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-18 23:19:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 135 transitions. [2019-12-18 23:19:29,859 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 135 transitions. Word has length 15 [2019-12-18 23:19:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:29,859 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 135 transitions. [2019-12-18 23:19:29,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-18 23:19:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 135 transitions. [2019-12-18 23:19:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:19:29,861 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:29,861 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:30,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:30,074 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash -867499506, now seen corresponding path program 4 times [2019-12-18 23:19:30,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:30,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130670069] [2019-12-18 23:19:30,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:30,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130670069] [2019-12-18 23:19:30,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959988883] [2019-12-18 23:19:30,209 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:30,278 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 23:19:30,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:30,280 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 23:19:30,281 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-18 23:19:30,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:30,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2019-12-18 23:19:30,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191507152] [2019-12-18 23:19:30,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-18 23:19:30,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:30,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-18 23:19:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-12-18 23:19:30,331 INFO L87 Difference]: Start difference. First operand 65 states and 135 transitions. Second operand 15 states. [2019-12-18 23:19:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:31,521 INFO L93 Difference]: Finished difference Result 235 states and 466 transitions. [2019-12-18 23:19:31,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-12-18 23:19:31,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-12-18 23:19:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:31,523 INFO L225 Difference]: With dead ends: 235 [2019-12-18 23:19:31,524 INFO L226 Difference]: Without dead ends: 235 [2019-12-18 23:19:31,527 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1720, Invalid=4442, Unknown=0, NotChecked=0, Total=6162 [2019-12-18 23:19:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-12-18 23:19:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 59. [2019-12-18 23:19:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-18 23:19:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2019-12-18 23:19:31,536 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 16 [2019-12-18 23:19:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:31,536 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2019-12-18 23:19:31,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-18 23:19:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2019-12-18 23:19:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-18 23:19:31,537 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:31,537 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:31,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:31,742 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:31,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:31,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2055665343, now seen corresponding path program 5 times [2019-12-18 23:19:31,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:31,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070823801] [2019-12-18 23:19:31,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:31,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070823801] [2019-12-18 23:19:31,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697141286] [2019-12-18 23:19:31,905 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:31,993 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-18 23:19:31,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:31,994 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:19:31,997 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-18 23:19:32,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:32,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2019-12-18 23:19:32,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240708969] [2019-12-18 23:19:32,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-18 23:19:32,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:32,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-18 23:19:32,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2019-12-18 23:19:32,079 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 16 states. [2019-12-18 23:19:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:33,377 INFO L93 Difference]: Finished difference Result 397 states and 785 transitions. [2019-12-18 23:19:33,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-18 23:19:33,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-12-18 23:19:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:33,380 INFO L225 Difference]: With dead ends: 397 [2019-12-18 23:19:33,380 INFO L226 Difference]: Without dead ends: 391 [2019-12-18 23:19:33,382 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1775, Invalid=4705, Unknown=0, NotChecked=0, Total=6480 [2019-12-18 23:19:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-12-18 23:19:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 100. [2019-12-18 23:19:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-18 23:19:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 211 transitions. [2019-12-18 23:19:33,393 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 211 transitions. Word has length 18 [2019-12-18 23:19:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:33,394 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 211 transitions. [2019-12-18 23:19:33,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-18 23:19:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 211 transitions. [2019-12-18 23:19:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 23:19:33,395 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:33,395 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:33,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:33,599 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:33,599 INFO L82 PathProgramCache]: Analyzing trace with hash 729250308, now seen corresponding path program 6 times [2019-12-18 23:19:33,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:33,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222243190] [2019-12-18 23:19:33,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:33,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222243190] [2019-12-18 23:19:33,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238932294] [2019-12-18 23:19:33,719 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:33,805 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-18 23:19:33,806 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:33,807 INFO L264 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 23:19:33,808 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 23:19:33,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:33,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2019-12-18 23:19:33,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089216841] [2019-12-18 23:19:33,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-18 23:19:33,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-18 23:19:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-18 23:19:33,882 INFO L87 Difference]: Start difference. First operand 100 states and 211 transitions. Second operand 19 states. [2019-12-18 23:19:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:36,830 INFO L93 Difference]: Finished difference Result 451 states and 898 transitions. [2019-12-18 23:19:36,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2019-12-18 23:19:36,831 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-12-18 23:19:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:36,835 INFO L225 Difference]: With dead ends: 451 [2019-12-18 23:19:36,835 INFO L226 Difference]: Without dead ends: 451 [2019-12-18 23:19:36,841 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8907 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5119, Invalid=14063, Unknown=0, NotChecked=0, Total=19182 [2019-12-18 23:19:36,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-12-18 23:19:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 82. [2019-12-18 23:19:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-18 23:19:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-18 23:19:36,850 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2019-12-18 23:19:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:36,850 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-18 23:19:36,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-18 23:19:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-18 23:19:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-18 23:19:36,851 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:36,851 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:37,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:37,063 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:37,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1093713423, now seen corresponding path program 7 times [2019-12-18 23:19:37,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:37,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4381702] [2019-12-18 23:19:37,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:37,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4381702] [2019-12-18 23:19:37,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265991869] [2019-12-18 23:19:37,210 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:37,287 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-18 23:19:37,290 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 23:19:37,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:37,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2019-12-18 23:19:37,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252641963] [2019-12-18 23:19:37,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-18 23:19:37,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-18 23:19:37,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2019-12-18 23:19:37,378 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 22 states. [2019-12-18 23:19:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:41,574 INFO L93 Difference]: Finished difference Result 639 states and 1274 transitions. [2019-12-18 23:19:41,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2019-12-18 23:19:41,574 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2019-12-18 23:19:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:41,579 INFO L225 Difference]: With dead ends: 639 [2019-12-18 23:19:41,579 INFO L226 Difference]: Without dead ends: 639 [2019-12-18 23:19:41,588 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19012 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=10080, Invalid=28140, Unknown=0, NotChecked=0, Total=38220 [2019-12-18 23:19:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-12-18 23:19:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 94. [2019-12-18 23:19:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-18 23:19:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 184 transitions. [2019-12-18 23:19:41,597 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 184 transitions. Word has length 21 [2019-12-18 23:19:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:41,598 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 184 transitions. [2019-12-18 23:19:41,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-18 23:19:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 184 transitions. [2019-12-18 23:19:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 23:19:41,599 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:41,599 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:41,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:41,806 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash -615202146, now seen corresponding path program 8 times [2019-12-18 23:19:41,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:41,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209794324] [2019-12-18 23:19:41,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:42,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209794324] [2019-12-18 23:19:42,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561796960] [2019-12-18 23:19:42,026 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:42,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 23:19:42,091 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:42,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-18 23:19:42,093 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-18 23:19:42,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:42,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2019-12-18 23:19:42,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892269309] [2019-12-18 23:19:42,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-18 23:19:42,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-18 23:19:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2019-12-18 23:19:42,196 INFO L87 Difference]: Start difference. First operand 94 states and 184 transitions. Second operand 25 states. [2019-12-18 23:19:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:48,958 INFO L93 Difference]: Finished difference Result 869 states and 1734 transitions. [2019-12-18 23:19:48,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-12-18 23:19:48,958 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 23 [2019-12-18 23:19:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:48,964 INFO L225 Difference]: With dead ends: 869 [2019-12-18 23:19:48,964 INFO L226 Difference]: Without dead ends: 869 [2019-12-18 23:19:48,969 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36612 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=18334, Invalid=51626, Unknown=0, NotChecked=0, Total=69960 [2019-12-18 23:19:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-12-18 23:19:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 106. [2019-12-18 23:19:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-18 23:19:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 208 transitions. [2019-12-18 23:19:48,979 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 208 transitions. Word has length 23 [2019-12-18 23:19:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:48,980 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 208 transitions. [2019-12-18 23:19:48,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-18 23:19:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 208 transitions. [2019-12-18 23:19:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-18 23:19:48,981 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:48,981 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:49,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:49,186 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash -327365621, now seen corresponding path program 9 times [2019-12-18 23:19:49,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:49,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659461945] [2019-12-18 23:19:49,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:49,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659461945] [2019-12-18 23:19:49,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062088164] [2019-12-18 23:19:49,377 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:49,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-18 23:19:49,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:49,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 23:19:49,442 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-18 23:19:49,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:49,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6] total 24 [2019-12-18 23:19:49,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956042177] [2019-12-18 23:19:49,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-18 23:19:49,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:49,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-18 23:19:49,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-12-18 23:19:49,490 INFO L87 Difference]: Start difference. First operand 106 states and 208 transitions. Second operand 24 states. [2019-12-18 23:19:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:19:53,089 INFO L93 Difference]: Finished difference Result 1267 states and 2524 transitions. [2019-12-18 23:19:53,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2019-12-18 23:19:53,090 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2019-12-18 23:19:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:19:53,097 INFO L225 Difference]: With dead ends: 1267 [2019-12-18 23:19:53,097 INFO L226 Difference]: Without dead ends: 1259 [2019-12-18 23:19:53,100 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17285 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9341, Invalid=26191, Unknown=0, NotChecked=0, Total=35532 [2019-12-18 23:19:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2019-12-18 23:19:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 188. [2019-12-18 23:19:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-18 23:19:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 398 transitions. [2019-12-18 23:19:53,124 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 398 transitions. Word has length 25 [2019-12-18 23:19:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:19:53,124 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 398 transitions. [2019-12-18 23:19:53,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-18 23:19:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 398 transitions. [2019-12-18 23:19:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-18 23:19:53,136 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:19:53,136 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:19:53,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:53,341 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:19:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:19:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1528033158, now seen corresponding path program 10 times [2019-12-18 23:19:53,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:19:53,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434683623] [2019-12-18 23:19:53,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:19:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:19:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:19:53,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434683623] [2019-12-18 23:19:53,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991296098] [2019-12-18 23:19:53,557 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:19:53,619 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 23:19:53,619 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:19:53,620 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-18 23:19:53,621 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:19:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-18 23:19:53,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:19:53,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 29 [2019-12-18 23:19:53,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132504266] [2019-12-18 23:19:53,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-18 23:19:53,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:19:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-18 23:19:53,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2019-12-18 23:19:53,736 INFO L87 Difference]: Start difference. First operand 188 states and 398 transitions. Second operand 29 states. [2019-12-18 23:20:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:20:05,449 INFO L93 Difference]: Finished difference Result 1400 states and 2796 transitions. [2019-12-18 23:20:05,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2019-12-18 23:20:05,450 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2019-12-18 23:20:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:20:05,458 INFO L225 Difference]: With dead ends: 1400 [2019-12-18 23:20:05,458 INFO L226 Difference]: Without dead ends: 1400 [2019-12-18 23:20:05,463 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84029 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=39039, Invalid=113451, Unknown=0, NotChecked=0, Total=152490 [2019-12-18 23:20:05,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-12-18 23:20:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 137. [2019-12-18 23:20:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-12-18 23:20:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 270 transitions. [2019-12-18 23:20:05,476 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 270 transitions. Word has length 26 [2019-12-18 23:20:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:20:05,476 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 270 transitions. [2019-12-18 23:20:05,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-18 23:20:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 270 transitions. [2019-12-18 23:20:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-18 23:20:05,477 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:20:05,477 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:20:05,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:20:05,681 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:20:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:20:05,681 INFO L82 PathProgramCache]: Analyzing trace with hash 655160301, now seen corresponding path program 11 times [2019-12-18 23:20:05,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:20:05,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415040065] [2019-12-18 23:20:05,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:20:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:20:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:20:05,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415040065] [2019-12-18 23:20:05,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818499434] [2019-12-18 23:20:05,937 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:20:05,995 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-18 23:20:05,995 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:20:05,996 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 23:20:05,998 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:20:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-18 23:20:06,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:20:06,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 28 [2019-12-18 23:20:06,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051316617] [2019-12-18 23:20:06,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-18 23:20:06,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:20:06,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-18 23:20:06,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-12-18 23:20:06,061 INFO L87 Difference]: Start difference. First operand 137 states and 270 transitions. Second operand 28 states. [2019-12-18 23:20:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:20:12,001 INFO L93 Difference]: Finished difference Result 1982 states and 3953 transitions. [2019-12-18 23:20:12,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2019-12-18 23:20:12,002 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2019-12-18 23:20:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:20:12,011 INFO L225 Difference]: With dead ends: 1982 [2019-12-18 23:20:12,011 INFO L226 Difference]: Without dead ends: 1972 [2019-12-18 23:20:12,013 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41303 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=20189, Invalid=57931, Unknown=0, NotChecked=0, Total=78120 [2019-12-18 23:20:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2019-12-18 23:20:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 249. [2019-12-18 23:20:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-12-18 23:20:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 528 transitions. [2019-12-18 23:20:12,030 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 528 transitions. Word has length 28 [2019-12-18 23:20:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:20:12,031 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 528 transitions. [2019-12-18 23:20:12,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-18 23:20:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 528 transitions. [2019-12-18 23:20:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-18 23:20:12,033 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:20:12,033 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:20:12,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:20:12,246 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:20:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:20:12,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1134500648, now seen corresponding path program 12 times [2019-12-18 23:20:12,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:20:12,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275098050] [2019-12-18 23:20:12,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:20:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:20:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:20:12,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275098050] [2019-12-18 23:20:12,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896987875] [2019-12-18 23:20:12,584 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:20:12,667 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-18 23:20:12,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:20:12,668 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-18 23:20:12,670 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:20:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 23:20:12,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:20:12,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 33 [2019-12-18 23:20:12,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536604126] [2019-12-18 23:20:12,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-18 23:20:12,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:20:12,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-18 23:20:12,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2019-12-18 23:20:12,810 INFO L87 Difference]: Start difference. First operand 249 states and 528 transitions. Second operand 33 states. [2019-12-18 23:20:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:20:32,948 INFO L93 Difference]: Finished difference Result 2150 states and 4296 transitions. [2019-12-18 23:20:32,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2019-12-18 23:20:32,949 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-12-18 23:20:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:20:32,959 INFO L225 Difference]: With dead ends: 2150 [2019-12-18 23:20:32,959 INFO L226 Difference]: Without dead ends: 2150 [2019-12-18 23:20:32,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173324 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=76120, Invalid=226930, Unknown=0, NotChecked=0, Total=303050 [2019-12-18 23:20:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-12-18 23:20:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 172. [2019-12-18 23:20:32,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-18 23:20:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2019-12-18 23:20:32,983 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2019-12-18 23:20:32,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:20:32,983 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2019-12-18 23:20:32,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-18 23:20:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2019-12-18 23:20:32,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-18 23:20:32,984 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:20:32,984 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:20:33,188 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:20:33,189 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:20:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:20:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash -307926907, now seen corresponding path program 13 times [2019-12-18 23:20:33,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:20:33,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104774586] [2019-12-18 23:20:33,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:20:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:20:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:20:33,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104774586] [2019-12-18 23:20:33,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818593323] [2019-12-18 23:20:33,461 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:20:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:20:33,530 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-18 23:20:33,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:20:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 23:20:33,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:20:33,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 36 [2019-12-18 23:20:33,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180822931] [2019-12-18 23:20:33,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-18 23:20:33,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:20:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-18 23:20:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2019-12-18 23:20:33,730 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 36 states. [2019-12-18 23:21:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:21:02,301 INFO L93 Difference]: Finished difference Result 2656 states and 5308 transitions. [2019-12-18 23:21:02,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 675 states. [2019-12-18 23:21:02,301 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 31 [2019-12-18 23:21:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:21:02,314 INFO L225 Difference]: With dead ends: 2656 [2019-12-18 23:21:02,315 INFO L226 Difference]: Without dead ends: 2656 [2019-12-18 23:21:02,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273352 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=117282, Invalid=349890, Unknown=0, NotChecked=0, Total=467172 [2019-12-18 23:21:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2019-12-18 23:21:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 188. [2019-12-18 23:21:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-18 23:21:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 372 transitions. [2019-12-18 23:21:02,343 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 372 transitions. Word has length 31 [2019-12-18 23:21:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:21:02,343 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 372 transitions. [2019-12-18 23:21:02,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-18 23:21:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 372 transitions. [2019-12-18 23:21:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-18 23:21:02,344 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:21:02,344 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:21:02,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:21:02,548 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:21:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:21:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash -539511566, now seen corresponding path program 14 times [2019-12-18 23:21:02,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:21:02,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112734553] [2019-12-18 23:21:02,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:21:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:21:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:21:02,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112734553] [2019-12-18 23:21:02,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081546631] [2019-12-18 23:21:02,937 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:21:03,025 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 23:21:03,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:21:03,027 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-18 23:21:03,029 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:21:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 23:21:03,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:21:03,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 39 [2019-12-18 23:21:03,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813645603] [2019-12-18 23:21:03,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-18 23:21:03,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:21:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-18 23:21:03,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2019-12-18 23:21:03,242 INFO L87 Difference]: Start difference. First operand 188 states and 372 transitions. Second operand 39 states. [2019-12-18 23:21:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:21:42,934 INFO L93 Difference]: Finished difference Result 3228 states and 6452 transitions. [2019-12-18 23:21:42,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 825 states. [2019-12-18 23:21:42,935 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 33 [2019-12-18 23:21:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:21:42,947 INFO L225 Difference]: With dead ends: 3228 [2019-12-18 23:21:42,947 INFO L226 Difference]: Without dead ends: 3228 [2019-12-18 23:21:42,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415362 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=174859, Invalid=521531, Unknown=0, NotChecked=0, Total=696390 [2019-12-18 23:21:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2019-12-18 23:21:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 204. [2019-12-18 23:21:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-12-18 23:21:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 404 transitions. [2019-12-18 23:21:42,978 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 404 transitions. Word has length 33 [2019-12-18 23:21:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:21:42,979 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 404 transitions. [2019-12-18 23:21:42,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-18 23:21:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 404 transitions. [2019-12-18 23:21:42,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-18 23:21:42,980 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:21:42,980 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:21:43,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:21:43,185 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:21:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:21:43,186 INFO L82 PathProgramCache]: Analyzing trace with hash 245930527, now seen corresponding path program 15 times [2019-12-18 23:21:43,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:21:43,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936243914] [2019-12-18 23:21:43,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:21:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:21:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:21:43,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936243914] [2019-12-18 23:21:43,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253542551] [2019-12-18 23:21:43,529 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:21:43,600 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-18 23:21:43,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:21:43,601 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-18 23:21:43,602 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:21:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-12-18 23:21:43,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:21:43,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 8] total 36 [2019-12-18 23:21:43,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151401261] [2019-12-18 23:21:43,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-18 23:21:43,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:21:43,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-18 23:21:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-12-18 23:21:43,704 INFO L87 Difference]: Start difference. First operand 204 states and 404 transitions. Second operand 36 states. [2019-12-18 23:21:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:21:56,364 INFO L93 Difference]: Finished difference Result 4264 states and 8516 transitions. [2019-12-18 23:21:56,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 482 states. [2019-12-18 23:21:56,365 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2019-12-18 23:21:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:21:56,380 INFO L225 Difference]: With dead ends: 4264 [2019-12-18 23:21:56,380 INFO L226 Difference]: Without dead ends: 4252 [2019-12-18 23:21:56,387 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135844 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=60247, Invalid=176435, Unknown=0, NotChecked=0, Total=236682 [2019-12-18 23:21:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-18 23:21:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 379. [2019-12-18 23:21:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-12-18 23:21:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 801 transitions. [2019-12-18 23:21:56,411 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 801 transitions. Word has length 35 [2019-12-18 23:21:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:21:56,411 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 801 transitions. [2019-12-18 23:21:56,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-18 23:21:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 801 transitions. [2019-12-18 23:21:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-18 23:21:56,413 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:21:56,413 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:21:56,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:21:56,617 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:21:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:21:56,617 INFO L82 PathProgramCache]: Analyzing trace with hash -935721754, now seen corresponding path program 16 times [2019-12-18 23:21:56,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:21:56,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650802886] [2019-12-18 23:21:56,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:21:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:21:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:21:56,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650802886] [2019-12-18 23:21:56,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146483361] [2019-12-18 23:21:56,980 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:21:57,048 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 23:21:57,049 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:21:57,049 INFO L264 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-18 23:21:57,051 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:21:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-18 23:21:57,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:21:57,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 43 [2019-12-18 23:21:57,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567684310] [2019-12-18 23:21:57,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-18 23:21:57,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:21:57,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-18 23:21:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2019-12-18 23:21:57,286 INFO L87 Difference]: Start difference. First operand 379 states and 801 transitions. Second operand 43 states. [2019-12-18 23:23:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:23:00,264 INFO L93 Difference]: Finished difference Result 4559 states and 9114 transitions. [2019-12-18 23:23:00,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1084 states. [2019-12-18 23:23:00,264 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 36 [2019-12-18 23:23:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:23:00,283 INFO L225 Difference]: With dead ends: 4559 [2019-12-18 23:23:00,283 INFO L226 Difference]: Without dead ends: 4559 [2019-12-18 23:23:00,305 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728882 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=296426, Invalid=901504, Unknown=0, NotChecked=0, Total=1197930 [2019-12-18 23:23:00,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2019-12-18 23:23:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 247. [2019-12-18 23:23:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-12-18 23:23:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2019-12-18 23:23:00,325 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 36 [2019-12-18 23:23:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:23:00,326 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2019-12-18 23:23:00,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-18 23:23:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2019-12-18 23:23:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-18 23:23:00,327 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:23:00,327 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:23:00,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:23:00,531 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:23:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:23:00,531 INFO L82 PathProgramCache]: Analyzing trace with hash -812157799, now seen corresponding path program 17 times [2019-12-18 23:23:00,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:23:00,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105605544] [2019-12-18 23:23:00,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:23:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:23:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:23:00,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105605544] [2019-12-18 23:23:00,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086910726] [2019-12-18 23:23:00,951 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:23:01,013 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-18 23:23:01,014 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:23:01,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-18 23:23:01,016 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:23:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-18 23:23:01,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:23:01,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 9] total 40 [2019-12-18 23:23:01,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497571387] [2019-12-18 23:23:01,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-18 23:23:01,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:23:01,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-18 23:23:01,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2019-12-18 23:23:01,181 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 40 states. [2019-12-18 23:23:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:23:19,873 INFO L93 Difference]: Finished difference Result 5929 states and 11845 transitions. [2019-12-18 23:23:19,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2019-12-18 23:23:19,874 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 38 [2019-12-18 23:23:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:23:19,885 INFO L225 Difference]: With dead ends: 5929 [2019-12-18 23:23:19,885 INFO L226 Difference]: Without dead ends: 5915 [2019-12-18 23:23:19,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252388 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=106734, Invalid=316416, Unknown=0, NotChecked=0, Total=423150 [2019-12-18 23:23:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2019-12-18 23:23:19,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 466. [2019-12-18 23:23:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-12-18 23:23:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 985 transitions. [2019-12-18 23:23:19,937 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 985 transitions. Word has length 38 [2019-12-18 23:23:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:23:19,937 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 985 transitions. [2019-12-18 23:23:19,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-18 23:23:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 985 transitions. [2019-12-18 23:23:19,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-18 23:23:19,939 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:23:19,940 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:23:20,151 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:23:20,151 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:23:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:23:20,151 INFO L82 PathProgramCache]: Analyzing trace with hash 623278508, now seen corresponding path program 18 times [2019-12-18 23:23:20,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:23:20,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174197569] [2019-12-18 23:23:20,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:23:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:23:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:23:20,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174197569] [2019-12-18 23:23:20,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509983027] [2019-12-18 23:23:20,625 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:23:20,738 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-18 23:23:20,738 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:23:20,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-18 23:23:20,741 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:23:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-18 23:23:20,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:23:20,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 42 [2019-12-18 23:23:20,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060094983] [2019-12-18 23:23:20,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-18 23:23:20,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:23:20,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-18 23:23:20,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-12-18 23:23:20,904 INFO L87 Difference]: Start difference. First operand 466 states and 985 transitions. Second operand 42 states. Received shutdown request... [2019-12-18 23:23:28,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2019-12-18 23:23:28,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:23:28,630 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 23:23:28,634 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 23:23:28,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:23:28 BasicIcfg [2019-12-18 23:23:28,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:23:28,636 INFO L168 Benchmark]: Toolchain (without parser) took 248582.17 ms. Allocated memory was 137.4 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 99.4 MB in the beginning and 595.0 MB in the end (delta: -495.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2019-12-18 23:23:28,636 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 137.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 23:23:28,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 966.83 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 99.0 MB in the beginning and 107.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2019-12-18 23:23:28,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.77 ms. Allocated memory is still 203.4 MB. Free memory was 107.9 MB in the beginning and 105.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 23:23:28,638 INFO L168 Benchmark]: Boogie Preprocessor took 40.20 ms. Allocated memory is still 203.4 MB. Free memory was 105.8 MB in the beginning and 103.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 23:23:28,638 INFO L168 Benchmark]: RCFGBuilder took 532.22 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 103.8 MB in the beginning and 195.6 MB in the end (delta: -91.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2019-12-18 23:23:28,639 INFO L168 Benchmark]: TraceAbstraction took 246953.57 ms. Allocated memory was 233.8 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 193.9 MB in the beginning and 595.0 MB in the end (delta: -401.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2019-12-18 23:23:28,641 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 137.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 966.83 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 99.0 MB in the beginning and 107.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 83.77 ms. Allocated memory is still 203.4 MB. Free memory was 107.9 MB in the beginning and 105.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.20 ms. Allocated memory is still 203.4 MB. Free memory was 105.8 MB in the beginning and 103.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.22 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 103.8 MB in the beginning and 195.6 MB in the end (delta: -91.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246953.57 ms. Allocated memory was 233.8 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 193.9 MB in the beginning and 595.0 MB in the end (delta: -401.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 5.0s, 82 ProgramPointsBefore, 14 ProgramPointsAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 328 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 510 CheckedPairsTotal, 77 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (466states) and FLOYD_HOARE automaton (currently 315 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 350 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Result: TIMEOUT, OverallTime: 246.8s, OverallIterations: 20, TraceHistogramMax: 12, AutomataDifference: 229.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 5771 SDslu, 4266 SDs, 0 SdLazy, 5044 SolverSat, 13118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7181 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 6341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254721 ImplicationChecksByTransitivity, 208.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 27544 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 929 NumberOfCodeBlocks, 883 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 60815 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2695 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 647/2473 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown