/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:23:37,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:23:37,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:23:37,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:23:37,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:23:37,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:23:37,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:23:37,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:23:37,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:23:37,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:23:37,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:23:37,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:23:37,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:23:37,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:23:37,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:23:37,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:23:37,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:23:37,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:23:37,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:23:37,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:23:37,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:23:37,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:23:37,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:23:37,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:23:37,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:23:37,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:23:37,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:23:37,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:23:37,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:23:37,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:23:37,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:23:37,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:23:37,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:23:37,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:23:37,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:23:37,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:23:37,718 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 [2019-11-06 22:23:37,736 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:23:37,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:23:37,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:23:37,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:23:37,739 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:23:37,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:23:37,739 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:23:37,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:23:37,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:23:37,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:23:37,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:23:37,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:23:37,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:23:37,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:23:37,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:23:37,742 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:23:37,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:23:37,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:23:37,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:23:37,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:23:37,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:23:37,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:23:37,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:23:37,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:23:37,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:23:37,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:23:37,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:23:37,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:23:37,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:23:38,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:23:38,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:23:38,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:23:38,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:23:38,040 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:23:38,041 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-11-06 22:23:38,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3241baa96/89599d4449f04a3da196111a200bb29d/FLAG905545373 [2019-11-06 22:23:38,562 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:23:38,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-1.c [2019-11-06 22:23:38,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3241baa96/89599d4449f04a3da196111a200bb29d/FLAG905545373 [2019-11-06 22:23:38,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3241baa96/89599d4449f04a3da196111a200bb29d [2019-11-06 22:23:38,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:23:38,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:23:38,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:23:38,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:23:38,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:23:38,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:38" (1/1) ... [2019-11-06 22:23:38,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edc095c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:38, skipping insertion in model container [2019-11-06 22:23:38,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:38" (1/1) ... [2019-11-06 22:23:38,993 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:23:39,042 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:23:39,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:23:39,330 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:23:39,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:23:39,492 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:23:39,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39 WrapperNode [2019-11-06 22:23:39,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:23:39,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:23:39,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:23:39,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:23:39,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (1/1) ... [2019-11-06 22:23:39,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:23:39,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:23:39,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:23:39,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:23:39,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (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 [2019-11-06 22:23:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:23:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:23:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-11-06 22:23:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-11-06 22:23:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-11-06 22:23:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-11-06 22:23:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-11-06 22:23:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-11-06 22:23:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-11-06 22:23:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-11-06 22:23:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-11-06 22:23:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-11-06 22:23:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-11-06 22:23:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:23:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:23:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:23:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-11-06 22:23:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-11-06 22:23:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-11-06 22:23:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-11-06 22:23:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-11-06 22:23:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-11-06 22:23:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-11-06 22:23:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-11-06 22:23:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-11-06 22:23:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-11-06 22:23:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-11-06 22:23:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-11-06 22:23:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-11-06 22:23:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-11-06 22:23:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-11-06 22:23:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-11-06 22:23:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-11-06 22:23:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:23:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:23:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:23:40,143 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:23:40,143 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 22:23:40,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:40 BoogieIcfgContainer [2019-11-06 22:23:40,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:23:40,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:23:40,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:23:40,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:23:40,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:23:38" (1/3) ... [2019-11-06 22:23:40,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b840cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:40, skipping insertion in model container [2019-11-06 22:23:40,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:39" (2/3) ... [2019-11-06 22:23:40,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b840cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:40, skipping insertion in model container [2019-11-06 22:23:40,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:40" (3/3) ... [2019-11-06 22:23:40,160 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2019-11-06 22:23:40,174 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:23:40,195 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:23:40,209 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:23:40,235 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:23:40,235 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:23:40,235 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:23:40,235 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:23:40,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:23:40,236 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:23:40,236 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:23:40,236 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:23:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2019-11-06 22:23:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:40,266 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:40,267 INFO L410 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] [2019-11-06 22:23:40,269 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash 4101629, now seen corresponding path program 1 times [2019-11-06 22:23:40,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:40,283 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829287844] [2019-11-06 22:23:40,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:40,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829287844] [2019-11-06 22:23:40,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:40,910 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:23:40,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969246479] [2019-11-06 22:23:40,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:23:40,923 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:40,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:23:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:23:40,956 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 10 states. [2019-11-06 22:23:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:43,430 INFO L93 Difference]: Finished difference Result 545 states and 904 transitions. [2019-11-06 22:23:43,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 22:23:43,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-11-06 22:23:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:43,451 INFO L225 Difference]: With dead ends: 545 [2019-11-06 22:23:43,452 INFO L226 Difference]: Without dead ends: 410 [2019-11-06 22:23:43,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2019-11-06 22:23:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2019-11-06 22:23:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 233. [2019-11-06 22:23:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-06 22:23:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 305 transitions. [2019-11-06 22:23:43,595 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 305 transitions. Word has length 78 [2019-11-06 22:23:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:43,596 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 305 transitions. [2019-11-06 22:23:43,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:23:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 305 transitions. [2019-11-06 22:23:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:43,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:43,612 INFO L410 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] [2019-11-06 22:23:43,612 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:43,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:43,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1430979773, now seen corresponding path program 1 times [2019-11-06 22:23:43,614 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:43,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991435965] [2019-11-06 22:23:43,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:43,883 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991435965] [2019-11-06 22:23:43,884 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:43,884 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:23:43,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191933963] [2019-11-06 22:23:43,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:23:43,886 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:43,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:23:43,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:23:43,887 INFO L87 Difference]: Start difference. First operand 233 states and 305 transitions. Second operand 10 states. [2019-11-06 22:23:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:46,908 INFO L93 Difference]: Finished difference Result 798 states and 1152 transitions. [2019-11-06 22:23:46,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-06 22:23:46,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-11-06 22:23:46,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:46,919 INFO L225 Difference]: With dead ends: 798 [2019-11-06 22:23:46,919 INFO L226 Difference]: Without dead ends: 592 [2019-11-06 22:23:46,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2019-11-06 22:23:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-11-06 22:23:46,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 359. [2019-11-06 22:23:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2019-11-06 22:23:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 475 transitions. [2019-11-06 22:23:46,995 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 475 transitions. Word has length 78 [2019-11-06 22:23:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:46,996 INFO L462 AbstractCegarLoop]: Abstraction has 359 states and 475 transitions. [2019-11-06 22:23:46,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:23:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 475 transitions. [2019-11-06 22:23:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:47,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:47,003 INFO L410 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] [2019-11-06 22:23:47,003 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:47,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1477202113, now seen corresponding path program 1 times [2019-11-06 22:23:47,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:47,004 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438566734] [2019-11-06 22:23:47,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:47,262 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438566734] [2019-11-06 22:23:47,262 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:47,263 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:23:47,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649974187] [2019-11-06 22:23:47,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:23:47,264 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:23:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:23:47,264 INFO L87 Difference]: Start difference. First operand 359 states and 475 transitions. Second operand 11 states. [2019-11-06 22:23:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:48,791 INFO L93 Difference]: Finished difference Result 854 states and 1203 transitions. [2019-11-06 22:23:48,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:23:48,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2019-11-06 22:23:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:48,796 INFO L225 Difference]: With dead ends: 854 [2019-11-06 22:23:48,797 INFO L226 Difference]: Without dead ends: 538 [2019-11-06 22:23:48,798 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:23:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-06 22:23:48,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 364. [2019-11-06 22:23:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-06 22:23:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 478 transitions. [2019-11-06 22:23:48,851 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 478 transitions. Word has length 78 [2019-11-06 22:23:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:48,853 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 478 transitions. [2019-11-06 22:23:48,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:23:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 478 transitions. [2019-11-06 22:23:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:48,856 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:48,857 INFO L410 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] [2019-11-06 22:23:48,857 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:48,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1229055619, now seen corresponding path program 1 times [2019-11-06 22:23:48,858 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:48,858 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233519173] [2019-11-06 22:23:48,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:49,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233519173] [2019-11-06 22:23:49,096 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:49,096 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:23:49,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379548473] [2019-11-06 22:23:49,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:23:49,097 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:49,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:23:49,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:23:49,098 INFO L87 Difference]: Start difference. First operand 364 states and 478 transitions. Second operand 10 states. [2019-11-06 22:23:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:51,866 INFO L93 Difference]: Finished difference Result 1293 states and 1852 transitions. [2019-11-06 22:23:51,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-06 22:23:51,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-11-06 22:23:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:51,876 INFO L225 Difference]: With dead ends: 1293 [2019-11-06 22:23:51,876 INFO L226 Difference]: Without dead ends: 972 [2019-11-06 22:23:51,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2019-11-06 22:23:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2019-11-06 22:23:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 693. [2019-11-06 22:23:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2019-11-06 22:23:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 897 transitions. [2019-11-06 22:23:51,963 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 897 transitions. Word has length 78 [2019-11-06 22:23:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:51,965 INFO L462 AbstractCegarLoop]: Abstraction has 693 states and 897 transitions. [2019-11-06 22:23:51,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:23:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 897 transitions. [2019-11-06 22:23:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:51,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:51,968 INFO L410 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] [2019-11-06 22:23:51,968 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash 650743635, now seen corresponding path program 1 times [2019-11-06 22:23:51,969 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:51,969 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432563592] [2019-11-06 22:23:51,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:52,186 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432563592] [2019-11-06 22:23:52,186 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:52,186 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:23:52,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518499616] [2019-11-06 22:23:52,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:23:52,187 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:52,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:23:52,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:23:52,188 INFO L87 Difference]: Start difference. First operand 693 states and 897 transitions. Second operand 11 states. [2019-11-06 22:23:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:53,948 INFO L93 Difference]: Finished difference Result 1615 states and 2204 transitions. [2019-11-06 22:23:53,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:23:53,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2019-11-06 22:23:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:53,956 INFO L225 Difference]: With dead ends: 1615 [2019-11-06 22:23:53,956 INFO L226 Difference]: Without dead ends: 965 [2019-11-06 22:23:53,959 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:23:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2019-11-06 22:23:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 708. [2019-11-06 22:23:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-11-06 22:23:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 909 transitions. [2019-11-06 22:23:54,033 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 909 transitions. Word has length 78 [2019-11-06 22:23:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:54,035 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 909 transitions. [2019-11-06 22:23:54,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:23:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 909 transitions. [2019-11-06 22:23:54,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:54,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:54,037 INFO L410 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] [2019-11-06 22:23:54,037 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash 578357077, now seen corresponding path program 1 times [2019-11-06 22:23:54,038 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:54,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864780838] [2019-11-06 22:23:54,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:54,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864780838] [2019-11-06 22:23:54,256 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:54,256 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:23:54,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436228702] [2019-11-06 22:23:54,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:23:54,257 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:23:54,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:23:54,258 INFO L87 Difference]: Start difference. First operand 708 states and 909 transitions. Second operand 10 states. [2019-11-06 22:23:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:56,936 INFO L93 Difference]: Finished difference Result 1671 states and 2254 transitions. [2019-11-06 22:23:56,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-06 22:23:56,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-11-06 22:23:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:56,949 INFO L225 Difference]: With dead ends: 1671 [2019-11-06 22:23:56,949 INFO L226 Difference]: Without dead ends: 1105 [2019-11-06 22:23:56,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2019-11-06 22:23:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2019-11-06 22:23:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 724. [2019-11-06 22:23:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-11-06 22:23:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 918 transitions. [2019-11-06 22:23:57,047 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 918 transitions. Word has length 78 [2019-11-06 22:23:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:57,047 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 918 transitions. [2019-11-06 22:23:57,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:23:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 918 transitions. [2019-11-06 22:23:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:23:57,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:57,049 INFO L410 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] [2019-11-06 22:23:57,050 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 68883987, now seen corresponding path program 1 times [2019-11-06 22:23:57,050 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:57,051 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207504910] [2019-11-06 22:23:57,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:57,226 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207504910] [2019-11-06 22:23:57,226 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:57,226 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:23:57,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457019288] [2019-11-06 22:23:57,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:23:57,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:23:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:23:57,230 INFO L87 Difference]: Start difference. First operand 724 states and 918 transitions. Second operand 8 states. [2019-11-06 22:23:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:23:59,574 INFO L93 Difference]: Finished difference Result 2460 states and 3468 transitions. [2019-11-06 22:23:59,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:23:59,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2019-11-06 22:23:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:23:59,588 INFO L225 Difference]: With dead ends: 2460 [2019-11-06 22:23:59,588 INFO L226 Difference]: Without dead ends: 1807 [2019-11-06 22:23:59,591 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:23:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2019-11-06 22:23:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1392. [2019-11-06 22:23:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2019-11-06 22:23:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1789 transitions. [2019-11-06 22:23:59,726 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1789 transitions. Word has length 78 [2019-11-06 22:23:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:23:59,727 INFO L462 AbstractCegarLoop]: Abstraction has 1392 states and 1789 transitions. [2019-11-06 22:23:59,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:23:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1789 transitions. [2019-11-06 22:23:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-06 22:23:59,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:23:59,730 INFO L410 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] [2019-11-06 22:23:59,730 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:23:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:23:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 173246819, now seen corresponding path program 1 times [2019-11-06 22:23:59,731 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:23:59,731 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669711611] [2019-11-06 22:23:59,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:23:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:23:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:23:59,945 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669711611] [2019-11-06 22:23:59,945 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:23:59,946 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:23:59,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137887335] [2019-11-06 22:23:59,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:23:59,946 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:23:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:23:59,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:23:59,947 INFO L87 Difference]: Start difference. First operand 1392 states and 1789 transitions. Second operand 8 states. [2019-11-06 22:24:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:24:01,763 INFO L93 Difference]: Finished difference Result 4302 states and 5953 transitions. [2019-11-06 22:24:01,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:24:01,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2019-11-06 22:24:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:24:01,782 INFO L225 Difference]: With dead ends: 4302 [2019-11-06 22:24:01,782 INFO L226 Difference]: Without dead ends: 2927 [2019-11-06 22:24:01,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:24:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2019-11-06 22:24:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2582. [2019-11-06 22:24:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2019-11-06 22:24:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3439 transitions. [2019-11-06 22:24:02,110 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3439 transitions. Word has length 79 [2019-11-06 22:24:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:24:02,111 INFO L462 AbstractCegarLoop]: Abstraction has 2582 states and 3439 transitions. [2019-11-06 22:24:02,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:24:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3439 transitions. [2019-11-06 22:24:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-06 22:24:02,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:24:02,117 INFO L410 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] [2019-11-06 22:24:02,117 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:24:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:24:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1970791480, now seen corresponding path program 1 times [2019-11-06 22:24:02,118 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:24:02,118 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508979498] [2019-11-06 22:24:02,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:24:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:24:02,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508979498] [2019-11-06 22:24:02,341 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:24:02,341 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:24:02,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130079671] [2019-11-06 22:24:02,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:24:02,343 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:24:02,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:24:02,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:24:02,344 INFO L87 Difference]: Start difference. First operand 2582 states and 3439 transitions. Second operand 11 states. [2019-11-06 22:24:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:24:06,052 INFO L93 Difference]: Finished difference Result 8214 states and 11790 transitions. [2019-11-06 22:24:06,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-06 22:24:06,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2019-11-06 22:24:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:24:06,089 INFO L225 Difference]: With dead ends: 8214 [2019-11-06 22:24:06,089 INFO L226 Difference]: Without dead ends: 5722 [2019-11-06 22:24:06,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2019-11-06 22:24:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2019-11-06 22:24:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5206. [2019-11-06 22:24:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5206 states. [2019-11-06 22:24:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 7174 transitions. [2019-11-06 22:24:06,748 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 7174 transitions. Word has length 87 [2019-11-06 22:24:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:24:06,750 INFO L462 AbstractCegarLoop]: Abstraction has 5206 states and 7174 transitions. [2019-11-06 22:24:06,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:24:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 7174 transitions. [2019-11-06 22:24:06,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:24:06,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:24:06,755 INFO L410 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] [2019-11-06 22:24:06,755 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:24:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:24:06,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1829324777, now seen corresponding path program 1 times [2019-11-06 22:24:06,756 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:24:06,756 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389352670] [2019-11-06 22:24:06,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:24:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:24:07,082 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389352670] [2019-11-06 22:24:07,082 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:24:07,082 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:24:07,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139621461] [2019-11-06 22:24:07,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:24:07,084 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:24:07,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:24:07,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:24:07,084 INFO L87 Difference]: Start difference. First operand 5206 states and 7174 transitions. Second operand 10 states. [2019-11-06 22:24:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:24:09,576 INFO L93 Difference]: Finished difference Result 7331 states and 10016 transitions. [2019-11-06 22:24:09,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-06 22:24:09,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-11-06 22:24:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:24:09,617 INFO L225 Difference]: With dead ends: 7331 [2019-11-06 22:24:09,617 INFO L226 Difference]: Without dead ends: 7328 [2019-11-06 22:24:09,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2019-11-06 22:24:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2019-11-06 22:24:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 6697. [2019-11-06 22:24:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6697 states. [2019-11-06 22:24:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9164 transitions. [2019-11-06 22:24:10,435 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9164 transitions. Word has length 88 [2019-11-06 22:24:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:24:10,436 INFO L462 AbstractCegarLoop]: Abstraction has 6697 states and 9164 transitions. [2019-11-06 22:24:10,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:24:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9164 transitions. [2019-11-06 22:24:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:24:10,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:24:10,442 INFO L410 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] [2019-11-06 22:24:10,442 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:24:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:24:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash -874813360, now seen corresponding path program 1 times [2019-11-06 22:24:10,442 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:24:10,443 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074896830] [2019-11-06 22:24:10,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:24:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:24:10,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074896830] [2019-11-06 22:24:10,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303954239] [2019-11-06 22:24:10,798 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 [2019-11-06 22:24:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:24:10,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-06 22:24:10,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:24:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:24:11,108 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:24:11,108 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2019-11-06 22:24:11,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575223667] [2019-11-06 22:24:11,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-06 22:24:11,109 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:24:11,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-06 22:24:11,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:24:11,110 INFO L87 Difference]: Start difference. First operand 6697 states and 9164 transitions. Second operand 17 states.