java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/kundu2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:18:46,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:18:46,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:18:46,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:18:46,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:18:46,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:18:46,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:18:46,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:18:46,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:18:46,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:18:46,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:18:46,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:18:46,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:18:46,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:18:46,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:18:46,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:18:46,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:18:46,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:18:46,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:18:46,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:18:46,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:18:46,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:18:46,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:18:46,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:18:46,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:18:46,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:18:46,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:18:46,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:18:46,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:18:46,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:18:46,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:18:46,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:18:46,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:18:46,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:18:46,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:18:46,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:18:46,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:18:46,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:18:46,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:18:46,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:18:46,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:18:46,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 16:18:46,598 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:18:46,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:18:46,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 16:18:46,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 16:18:46,600 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 16:18:46,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:18:46,601 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:18:46,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 16:18:46,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:18:46,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:18:46,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:18:46,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:18:46,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:18:46,602 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:18:46,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:18:46,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 16:18:46,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:18:46,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:18:46,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:18:46,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 16:18:46,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 16:18:46,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:18:46,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:18:46,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:18:46,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 16:18:46,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 16:18:46,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:18:46,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 16:18:46,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:18:46,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:18:46,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:18:46,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:18:46,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:18:46,681 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:18:46,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/kundu2.cil.c [2019-10-02 16:18:46,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd584afd/77f8ff4e42ba422fa476b85009bc90d1/FLAG6c5bd55d6 [2019-10-02 16:18:47,212 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:18:47,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c [2019-10-02 16:18:47,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd584afd/77f8ff4e42ba422fa476b85009bc90d1/FLAG6c5bd55d6 [2019-10-02 16:18:47,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd584afd/77f8ff4e42ba422fa476b85009bc90d1 [2019-10-02 16:18:47,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:18:47,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:18:47,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:18:47,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:18:47,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:18:47,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:18:47" (1/1) ... [2019-10-02 16:18:47,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af509e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:47, skipping insertion in model container [2019-10-02 16:18:47,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:18:47" (1/1) ... [2019-10-02 16:18:47,594 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:18:47,645 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:18:47,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:18:47,923 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:18:48,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:18:48,083 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:18:48,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48 WrapperNode [2019-10-02 16:18:48,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:18:48,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:18:48,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:18:48,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:18:48,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (1/1) ... [2019-10-02 16:18:48,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:18:48,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:18:48,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:18:48,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:18:48,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (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 [2019-10-02 16:18:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:18:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:18:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-02 16:18:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure read_data [2019-10-02 16:18:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2019-10-02 16:18:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P_1 [2019-10-02 16:18:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_1_triggered [2019-10-02 16:18:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P_2 [2019-10-02 16:18:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_2_triggered [2019-10-02 16:18:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure C_1 [2019-10-02 16:18:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure is_C_1_triggered [2019-10-02 16:18:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-02 16:18:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-02 16:18:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-02 16:18:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-02 16:18:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-02 16:18:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-02 16:18:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-02 16:18:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-02 16:18:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-02 16:18:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-02 16:18:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-02 16:18:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-02 16:18:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-02 16:18:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:18:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:18:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:18:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-02 16:18:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-02 16:18:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure read_data [2019-10-02 16:18:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2019-10-02 16:18:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure P_1 [2019-10-02 16:18:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_1_triggered [2019-10-02 16:18:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure P_2 [2019-10-02 16:18:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_2_triggered [2019-10-02 16:18:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure C_1 [2019-10-02 16:18:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure is_C_1_triggered [2019-10-02 16:18:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-02 16:18:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-02 16:18:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-02 16:18:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-02 16:18:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-02 16:18:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-02 16:18:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:18:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:18:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:18:48,882 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:18:48,883 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:18:48,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:18:48 BoogieIcfgContainer [2019-10-02 16:18:48,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:18:48,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:18:48,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:18:48,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:18:48,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:18:47" (1/3) ... [2019-10-02 16:18:48,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eff287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:18:48, skipping insertion in model container [2019-10-02 16:18:48,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:18:48" (2/3) ... [2019-10-02 16:18:48,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eff287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:18:48, skipping insertion in model container [2019-10-02 16:18:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:18:48" (3/3) ... [2019-10-02 16:18:48,899 INFO L109 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2019-10-02 16:18:48,910 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:18:48,922 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:18:48,940 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:18:48,975 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 16:18:48,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:18:48,976 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 16:18:48,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:18:48,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:18:48,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:18:48,977 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:18:48,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:18:48,977 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:18:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-10-02 16:18:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-02 16:18:49,012 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:49,014 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:49,016 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:49,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1619619400, now seen corresponding path program 1 times [2019-10-02 16:18:49,024 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:49,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:49,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:49,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:49,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:18:49,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:49,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:18:49,394 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:18:49,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:18:49,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:18:49,412 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2019-10-02 16:18:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:49,918 INFO L93 Difference]: Finished difference Result 493 states and 700 transitions. [2019-10-02 16:18:49,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:18:49,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2019-10-02 16:18:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:49,937 INFO L225 Difference]: With dead ends: 493 [2019-10-02 16:18:49,937 INFO L226 Difference]: Without dead ends: 319 [2019-10-02 16:18:49,943 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:18:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2019-10-02 16:18:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 312. [2019-10-02 16:18:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2019-10-02 16:18:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 410 transitions. [2019-10-02 16:18:50,027 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 410 transitions. Word has length 82 [2019-10-02 16:18:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:50,028 INFO L475 AbstractCegarLoop]: Abstraction has 312 states and 410 transitions. [2019-10-02 16:18:50,028 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:18:50,028 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 410 transitions. [2019-10-02 16:18:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-02 16:18:50,032 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:50,033 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:50,033 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1801870201, now seen corresponding path program 1 times [2019-10-02 16:18:50,034 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:50,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:50,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:18:50,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:50,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:18:50,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:18:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:18:50,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:18:50,192 INFO L87 Difference]: Start difference. First operand 312 states and 410 transitions. Second operand 4 states. [2019-10-02 16:18:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:50,491 INFO L93 Difference]: Finished difference Result 881 states and 1195 transitions. [2019-10-02 16:18:50,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:18:50,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2019-10-02 16:18:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:50,499 INFO L225 Difference]: With dead ends: 881 [2019-10-02 16:18:50,499 INFO L226 Difference]: Without dead ends: 590 [2019-10-02 16:18:50,502 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:18:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-02 16:18:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 565. [2019-10-02 16:18:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2019-10-02 16:18:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 735 transitions. [2019-10-02 16:18:50,600 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 735 transitions. Word has length 82 [2019-10-02 16:18:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:50,601 INFO L475 AbstractCegarLoop]: Abstraction has 565 states and 735 transitions. [2019-10-02 16:18:50,601 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:18:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 735 transitions. [2019-10-02 16:18:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-02 16:18:50,604 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:50,605 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:50,605 INFO L418 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:50,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1148563485, now seen corresponding path program 1 times [2019-10-02 16:18:50,606 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:50,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:50,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:50,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:50,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:18:50,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:50,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:18:50,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:18:50,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:18:50,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:18:50,795 INFO L87 Difference]: Start difference. First operand 565 states and 735 transitions. Second operand 6 states. [2019-10-02 16:18:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:50,905 INFO L93 Difference]: Finished difference Result 1129 states and 1502 transitions. [2019-10-02 16:18:50,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 16:18:50,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-10-02 16:18:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:50,915 INFO L225 Difference]: With dead ends: 1129 [2019-10-02 16:18:50,916 INFO L226 Difference]: Without dead ends: 585 [2019-10-02 16:18:50,918 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-02 16:18:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-10-02 16:18:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 575. [2019-10-02 16:18:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2019-10-02 16:18:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 743 transitions. [2019-10-02 16:18:50,984 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 743 transitions. Word has length 83 [2019-10-02 16:18:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:50,984 INFO L475 AbstractCegarLoop]: Abstraction has 575 states and 743 transitions. [2019-10-02 16:18:50,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:18:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 743 transitions. [2019-10-02 16:18:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-02 16:18:50,991 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:50,991 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:50,991 INFO L418 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash -223243813, now seen corresponding path program 1 times [2019-10-02 16:18:50,992 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:50,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:50,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:50,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:50,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:18:51,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:51,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:18:51,157 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:18:51,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:18:51,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:18:51,158 INFO L87 Difference]: Start difference. First operand 575 states and 743 transitions. Second operand 6 states. [2019-10-02 16:18:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:51,299 INFO L93 Difference]: Finished difference Result 1504 states and 1996 transitions. [2019-10-02 16:18:51,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:18:51,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-10-02 16:18:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:51,308 INFO L225 Difference]: With dead ends: 1504 [2019-10-02 16:18:51,309 INFO L226 Difference]: Without dead ends: 951 [2019-10-02 16:18:51,312 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-02 16:18:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2019-10-02 16:18:51,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 927. [2019-10-02 16:18:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2019-10-02 16:18:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1213 transitions. [2019-10-02 16:18:51,372 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1213 transitions. Word has length 83 [2019-10-02 16:18:51,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:51,373 INFO L475 AbstractCegarLoop]: Abstraction has 927 states and 1213 transitions. [2019-10-02 16:18:51,373 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:18:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1213 transitions. [2019-10-02 16:18:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-02 16:18:51,375 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:51,375 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:51,376 INFO L418 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:51,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1894736262, now seen corresponding path program 1 times [2019-10-02 16:18:51,376 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:51,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:51,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:51,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:51,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:18:51,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:51,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 16:18:51,549 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 16:18:51,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 16:18:51,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-02 16:18:51,550 INFO L87 Difference]: Start difference. First operand 927 states and 1213 transitions. Second operand 8 states. [2019-10-02 16:18:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:53,223 INFO L93 Difference]: Finished difference Result 2914 states and 4213 transitions. [2019-10-02 16:18:53,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-02 16:18:53,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2019-10-02 16:18:53,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:53,241 INFO L225 Difference]: With dead ends: 2914 [2019-10-02 16:18:53,241 INFO L226 Difference]: Without dead ends: 2131 [2019-10-02 16:18:53,247 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2019-10-02 16:18:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2019-10-02 16:18:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2014. [2019-10-02 16:18:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2019-10-02 16:18:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2850 transitions. [2019-10-02 16:18:53,405 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2850 transitions. Word has length 96 [2019-10-02 16:18:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:53,405 INFO L475 AbstractCegarLoop]: Abstraction has 2014 states and 2850 transitions. [2019-10-02 16:18:53,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 16:18:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2850 transitions. [2019-10-02 16:18:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-02 16:18:53,407 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:53,408 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:53,408 INFO L418 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:53,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1165049387, now seen corresponding path program 1 times [2019-10-02 16:18:53,409 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:53,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:53,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:53,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:53,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:18:53,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:53,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-02 16:18:53,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 16:18:53,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 16:18:53,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-02 16:18:53,596 INFO L87 Difference]: Start difference. First operand 2014 states and 2850 transitions. Second operand 9 states. [2019-10-02 16:18:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:55,453 INFO L93 Difference]: Finished difference Result 2322 states and 3502 transitions. [2019-10-02 16:18:55,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-02 16:18:55,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2019-10-02 16:18:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:55,481 INFO L225 Difference]: With dead ends: 2322 [2019-10-02 16:18:55,481 INFO L226 Difference]: Without dead ends: 2319 [2019-10-02 16:18:55,484 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2019-10-02 16:18:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2019-10-02 16:18:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2118. [2019-10-02 16:18:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2118 states. [2019-10-02 16:18:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3079 transitions. [2019-10-02 16:18:55,713 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3079 transitions. Word has length 101 [2019-10-02 16:18:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:55,714 INFO L475 AbstractCegarLoop]: Abstraction has 2118 states and 3079 transitions. [2019-10-02 16:18:55,714 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 16:18:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3079 transitions. [2019-10-02 16:18:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-02 16:18:55,718 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:55,718 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:55,718 INFO L418 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1774230569, now seen corresponding path program 1 times [2019-10-02 16:18:55,720 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:55,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:55,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:55,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:55,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 16:18:55,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:18:55,788 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 16:18:55,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:55,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 16:18:55,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 16:18:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 16:18:56,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:18:56,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-10-02 16:18:56,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:18:56,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:18:56,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:18:56,038 INFO L87 Difference]: Start difference. First operand 2118 states and 3079 transitions. Second operand 3 states. [2019-10-02 16:18:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:56,264 INFO L93 Difference]: Finished difference Result 6100 states and 9810 transitions. [2019-10-02 16:18:56,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:18:56,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-10-02 16:18:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:56,299 INFO L225 Difference]: With dead ends: 6100 [2019-10-02 16:18:56,300 INFO L226 Difference]: Without dead ends: 4004 [2019-10-02 16:18:56,321 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:18:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2019-10-02 16:18:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3999. [2019-10-02 16:18:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2019-10-02 16:18:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 6242 transitions. [2019-10-02 16:18:56,698 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 6242 transitions. Word has length 104 [2019-10-02 16:18:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:56,699 INFO L475 AbstractCegarLoop]: Abstraction has 3999 states and 6242 transitions. [2019-10-02 16:18:56,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:18:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 6242 transitions. [2019-10-02 16:18:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-02 16:18:56,704 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:56,705 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:56,705 INFO L418 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:56,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1882546839, now seen corresponding path program 1 times [2019-10-02 16:18:56,706 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:56,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:56,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:56,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:56,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-02 16:18:56,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:18:56,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:18:56,763 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:18:56,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:18:56,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:18:56,764 INFO L87 Difference]: Start difference. First operand 3999 states and 6242 transitions. Second operand 4 states. [2019-10-02 16:18:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:18:57,149 INFO L93 Difference]: Finished difference Result 7970 states and 12444 transitions. [2019-10-02 16:18:57,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:18:57,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-10-02 16:18:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:18:57,188 INFO L225 Difference]: With dead ends: 7970 [2019-10-02 16:18:57,189 INFO L226 Difference]: Without dead ends: 3992 [2019-10-02 16:18:57,222 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:18:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2019-10-02 16:18:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3992. [2019-10-02 16:18:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2019-10-02 16:18:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6228 transitions. [2019-10-02 16:18:57,495 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6228 transitions. Word has length 106 [2019-10-02 16:18:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:18:57,495 INFO L475 AbstractCegarLoop]: Abstraction has 3992 states and 6228 transitions. [2019-10-02 16:18:57,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:18:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6228 transitions. [2019-10-02 16:18:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-02 16:18:57,501 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:18:57,501 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:18:57,501 INFO L418 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:18:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:18:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash 535357227, now seen corresponding path program 1 times [2019-10-02 16:18:57,502 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:18:57,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:18:57,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:57,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:57,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:18:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 16:18:57,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:18:57,602 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 16:18:57,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:18:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:18:57,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 16:18:57,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 16:18:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream Closed [2019-10-02 16:18:57,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:18:57,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-10-02 16:18:57,762 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 16:18:57,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 16:18:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-02 16:18:57,763 INFO L87 Difference]: Start difference. First operand 3992 states and 6228 transitions. Second operand 8 states. [2019-10-02 16:19:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:19:04,623 INFO L93 Difference]: Finished difference Result 29621 states and 90372 transitions. [2019-10-02 16:19:04,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-02 16:19:04,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2019-10-02 16:19:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:19:04,930 INFO L225 Difference]: With dead ends: 29621 [2019-10-02 16:19:04,930 INFO L226 Difference]: Without dead ends: 25650 [2019-10-02 16:19:05,084 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-10-02 16:19:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25650 states. [2019-10-02 16:19:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25650 to 24916. [2019-10-02 16:19:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24916 states. [2019-10-02 16:19:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24916 states to 24916 states and 68222 transitions. [2019-10-02 16:19:09,049 INFO L78 Accepts]: Start accepts. Automaton has 24916 states and 68222 transitions. Word has length 106 [2019-10-02 16:19:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:19:09,049 INFO L475 AbstractCegarLoop]: Abstraction has 24916 states and 68222 transitions. [2019-10-02 16:19:09,049 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 16:19:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24916 states and 68222 transitions. [2019-10-02 16:19:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-02 16:19:09,056 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:19:09,056 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:19:09,057 INFO L418 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:19:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:19:09,057 INFO L82 PathProgramCache]: Analyzing trace with hash -719656318, now seen corresponding path program 1 times [2019-10-02 16:19:09,057 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:19:09,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:19:09,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:19:09,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:19:09,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:19:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:19:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:19:09,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:19:09,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 16:19:09,134 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 16:19:09,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 16:19:09,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-02 16:19:09,135 INFO L87 Difference]: Start difference. First operand 24916 states and 68222 transitions. Second operand 7 states. [2019-10-02 16:19:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:19:13,605 INFO L93 Difference]: Finished difference Result 70386 states and 229541 transitions. [2019-10-02 16:19:13,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 16:19:13,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-02 16:19:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:19:14,121 INFO L225 Difference]: With dead ends: 70386 [2019-10-02 16:19:14,121 INFO L226 Difference]: Without dead ends: 46665 [2019-10-02 16:19:16,964 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-10-02 16:19:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46665 states. [2019-10-02 16:19:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46665 to 45863. [2019-10-02 16:19:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45863 states. [2019-10-02 16:19:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45863 states to 45863 states and 111708 transitions. [2019-10-02 16:19:23,181 INFO L78 Accepts]: Start accepts. Automaton has 45863 states and 111708 transitions. Word has length 112 [2019-10-02 16:19:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:19:23,181 INFO L475 AbstractCegarLoop]: Abstraction has 45863 states and 111708 transitions. [2019-10-02 16:19:23,182 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 16:19:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 45863 states and 111708 transitions. [2019-10-02 16:19:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-02 16:19:23,191 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:19:23,191 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:19:23,191 INFO L418 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:19:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:19:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1217934684, now seen corresponding path program 1 times [2019-10-02 16:19:23,192 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:19:23,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:19:23,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:19:23,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:19:23,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:19:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:19:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:19:23,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:19:23,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 16:19:23,299 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 16:19:23,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 16:19:23,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 16:19:23,300 INFO L87 Difference]: Start difference. First operand 45863 states and 111708 transitions. Second operand 8 states. [2019-10-02 16:19:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:19:29,698 INFO L93 Difference]: Finished difference Result 103269 states and 295412 transitions. [2019-10-02 16:19:29,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-02 16:19:29,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2019-10-02 16:19:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:19:30,131 INFO L225 Difference]: With dead ends: 103269 [2019-10-02 16:19:30,131 INFO L226 Difference]: Without dead ends: 48571 [2019-10-02 16:19:30,679 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-10-02 16:19:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48571 states. [2019-10-02 16:19:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48571 to 47873. [2019-10-02 16:19:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47873 states. [2019-10-02 16:19:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47873 states to 47873 states and 134322 transitions. [2019-10-02 16:19:35,897 INFO L78 Accepts]: Start accepts. Automaton has 47873 states and 134322 transitions. Word has length 116 [2019-10-02 16:19:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:19:35,897 INFO L475 AbstractCegarLoop]: Abstraction has 47873 states and 134322 transitions. [2019-10-02 16:19:35,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 16:19:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 47873 states and 134322 transitions. [2019-10-02 16:19:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-02 16:19:35,907 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:19:35,907 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:19:35,908 INFO L418 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:19:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:19:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1456232897, now seen corresponding path program 1 times [2019-10-02 16:19:35,908 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:19:35,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:19:35,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:19:35,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:19:35,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:19:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:19:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 16:19:36,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:19:36,012 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 16:19:36,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:19:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:19:36,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 16:19:36,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 16:19:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 16:19:36,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:19:36,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-02 16:19:36,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 16:19:36,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 16:19:36,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-02 16:19:36,173 INFO L87 Difference]: Start difference. First operand 47873 states and 134322 transitions. Second operand 9 states. [2019-10-02 16:20:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:20:01,414 INFO L93 Difference]: Finished difference Result 167273 states and 1265131 transitions. [2019-10-02 16:20:01,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 16:20:01,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2019-10-02 16:20:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:20:11,741 INFO L225 Difference]: With dead ends: 167273 [2019-10-02 16:20:11,742 INFO L226 Difference]: Without dead ends: 119427 [2019-10-02 16:20:15,147 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2019-10-02 16:20:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119427 states. [2019-10-02 16:20:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119427 to 116377. [2019-10-02 16:20:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116377 states. [2019-10-02 16:21:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116377 states to 116377 states and 826772 transitions. [2019-10-02 16:21:16,695 INFO L78 Accepts]: Start accepts. Automaton has 116377 states and 826772 transitions. Word has length 121 [2019-10-02 16:21:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:21:16,695 INFO L475 AbstractCegarLoop]: Abstraction has 116377 states and 826772 transitions. [2019-10-02 16:21:16,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 16:21:16,696 INFO L276 IsEmpty]: Start isEmpty. Operand 116377 states and 826772 transitions. [2019-10-02 16:21:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-02 16:21:16,708 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:21:16,708 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:21:16,709 INFO L418 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:21:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:21:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash 884795765, now seen corresponding path program 1 times [2019-10-02 16:21:16,709 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 16:21:16,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 16:21:16,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:21:16,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:21:16,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:21:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:21:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-02 16:21:16,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:21:16,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:21:16,768 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:21:16,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:21:16,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:21:16,769 INFO L87 Difference]: Start difference. First operand 116377 states and 826772 transitions. Second operand 5 states.