/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:17:57,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:17:57,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:17:57,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:17:57,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:17:57,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:17:57,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:17:57,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:17:57,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:17:57,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:17:57,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:17:57,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:17:57,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:17:57,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:17:57,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:17:57,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:17:57,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:17:57,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:17:57,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:17:57,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:17:57,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:17:57,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:17:57,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:17:57,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:17:57,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:17:57,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:17:57,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:17:57,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:17:57,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:17:57,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:17:57,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:17:57,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:17:57,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:17:57,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:17:57,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:17:57,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:17:57,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:17:57,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:17:57,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:17:57,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:17:57,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:17:57,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:17:57,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:17:57,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:17:57,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:17:57,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:17:57,770 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:17:57,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:17:57,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:17:57,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:17:57,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:17:57,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:17:57,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:17:57,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:17:57,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:17:57,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:17:57,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:17:57,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:17:57,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:17:57,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:17:57,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:17:57,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:17:57,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:17:57,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:17:57,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:17:57,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:17:57,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:17:57,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:17:57,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:17:57,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:17:57,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:17:57,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:17:58,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:17:58,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:17:58,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:17:58,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:17:58,140 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:17:58,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-21 18:17:58,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df2a8632a/99f826fc58f94b908d14cc880368d1de/FLAG71fe31474 [2020-08-21 18:17:58,697 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:17:58,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-21 18:17:58,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df2a8632a/99f826fc58f94b908d14cc880368d1de/FLAG71fe31474 [2020-08-21 18:17:59,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df2a8632a/99f826fc58f94b908d14cc880368d1de [2020-08-21 18:17:59,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:17:59,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:17:59,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:17:59,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:17:59,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:17:59,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144c4f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59, skipping insertion in model container [2020-08-21 18:17:59,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:17:59,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:17:59,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:17:59,316 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:17:59,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:17:59,474 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:17:59,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59 WrapperNode [2020-08-21 18:17:59,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:17:59,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:17:59,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:17:59,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:17:59,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... [2020-08-21 18:17:59,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:17:59,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:17:59,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:17:59,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:17:59,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:17:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:17:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:17:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 18:17:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 18:17:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 18:17:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-21 18:17:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 18:17:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 18:17:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-21 18:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 18:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 18:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 18:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 18:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 18:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 18:17:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 18:17:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 18:17:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 18:17:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 18:17:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 18:17:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 18:17:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 18:17:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:17:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:17:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:17:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 18:17:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-21 18:17:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 18:17:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 18:17:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 18:17:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 18:17:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 18:17:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 18:17:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 18:17:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 18:17:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 18:17:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 18:17:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 18:17:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 18:17:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:17:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:17:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:18:00,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:18:00,114 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 18:18:00,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:18:00 BoogieIcfgContainer [2020-08-21 18:18:00,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:18:00,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:18:00,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:18:00,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:18:00,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:17:59" (1/3) ... [2020-08-21 18:18:00,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76125423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:18:00, skipping insertion in model container [2020-08-21 18:18:00,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:17:59" (2/3) ... [2020-08-21 18:18:00,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76125423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:18:00, skipping insertion in model container [2020-08-21 18:18:00,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:18:00" (3/3) ... [2020-08-21 18:18:00,139 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-08-21 18:18:00,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:18:00,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:18:00,173 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:18:00,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:18:00,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:18:00,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:18:00,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:18:00,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:18:00,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:18:00,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:18:00,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:18:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 18:18:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:00,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:00,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:00,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:00,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1996614335, now seen corresponding path program 1 times [2020-08-21 18:18:00,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:00,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512179464] [2020-08-21 18:18:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:00,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512179464] [2020-08-21 18:18:00,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:00,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:18:00,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57066954] [2020-08-21 18:18:00,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:18:00,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:00,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:18:00,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:18:00,802 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-08-21 18:18:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:02,316 INFO L93 Difference]: Finished difference Result 412 states and 626 transitions. [2020-08-21 18:18:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:18:02,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-21 18:18:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:02,335 INFO L225 Difference]: With dead ends: 412 [2020-08-21 18:18:02,336 INFO L226 Difference]: Without dead ends: 247 [2020-08-21 18:18:02,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:18:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-08-21 18:18:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2020-08-21 18:18:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 18:18:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2020-08-21 18:18:02,423 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 90 [2020-08-21 18:18:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:02,424 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2020-08-21 18:18:02,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:18:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2020-08-21 18:18:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:02,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:02,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:02,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:18:02,429 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash -387310403, now seen corresponding path program 1 times [2020-08-21 18:18:02,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:02,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475715631] [2020-08-21 18:18:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:02,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475715631] [2020-08-21 18:18:02,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:02,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:18:02,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604134467] [2020-08-21 18:18:02,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:18:02,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:18:02,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:18:02,737 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand 9 states. [2020-08-21 18:18:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:04,897 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2020-08-21 18:18:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:18:04,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-08-21 18:18:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:04,905 INFO L225 Difference]: With dead ends: 579 [2020-08-21 18:18:04,905 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 18:18:04,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:18:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 18:18:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 294. [2020-08-21 18:18:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 18:18:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 393 transitions. [2020-08-21 18:18:04,981 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 393 transitions. Word has length 90 [2020-08-21 18:18:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:04,982 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 393 transitions. [2020-08-21 18:18:04,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:18:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 393 transitions. [2020-08-21 18:18:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:04,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:04,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:04,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:18:04,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:04,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:04,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1952833149, now seen corresponding path program 1 times [2020-08-21 18:18:04,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:04,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739852019] [2020-08-21 18:18:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:05,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739852019] [2020-08-21 18:18:05,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:05,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:05,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645951022] [2020-08-21 18:18:05,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:05,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:05,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:05,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:05,271 INFO L87 Difference]: Start difference. First operand 294 states and 393 transitions. Second operand 10 states. [2020-08-21 18:18:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:06,455 INFO L93 Difference]: Finished difference Result 704 states and 993 transitions. [2020-08-21 18:18:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:18:06,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:06,465 INFO L225 Difference]: With dead ends: 704 [2020-08-21 18:18:06,465 INFO L226 Difference]: Without dead ends: 430 [2020-08-21 18:18:06,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:18:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-21 18:18:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 294. [2020-08-21 18:18:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 18:18:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2020-08-21 18:18:06,528 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 90 [2020-08-21 18:18:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:06,529 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2020-08-21 18:18:06,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2020-08-21 18:18:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:06,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:06,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:06,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:18:06,532 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:06,532 INFO L82 PathProgramCache]: Analyzing trace with hash 227206333, now seen corresponding path program 1 times [2020-08-21 18:18:06,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:06,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808606287] [2020-08-21 18:18:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:06,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808606287] [2020-08-21 18:18:06,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:06,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:06,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760618412] [2020-08-21 18:18:06,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:06,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:06,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:06,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:06,701 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand 10 states. [2020-08-21 18:18:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:07,981 INFO L93 Difference]: Finished difference Result 700 states and 971 transitions. [2020-08-21 18:18:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:18:07,983 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:07,986 INFO L225 Difference]: With dead ends: 700 [2020-08-21 18:18:07,986 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 18:18:07,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:18:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 18:18:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-08-21 18:18:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 18:18:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 379 transitions. [2020-08-21 18:18:08,025 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 379 transitions. Word has length 90 [2020-08-21 18:18:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:08,026 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 379 transitions. [2020-08-21 18:18:08,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 379 transitions. [2020-08-21 18:18:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:08,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:08,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:08,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:18:08,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:08,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1418466941, now seen corresponding path program 1 times [2020-08-21 18:18:08,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:08,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539492361] [2020-08-21 18:18:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:08,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539492361] [2020-08-21 18:18:08,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:08,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:08,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221344367] [2020-08-21 18:18:08,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:08,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:08,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:08,188 INFO L87 Difference]: Start difference. First operand 294 states and 379 transitions. Second operand 10 states. [2020-08-21 18:18:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:09,926 INFO L93 Difference]: Finished difference Result 855 states and 1230 transitions. [2020-08-21 18:18:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:18:09,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:09,932 INFO L225 Difference]: With dead ends: 855 [2020-08-21 18:18:09,933 INFO L226 Difference]: Without dead ends: 581 [2020-08-21 18:18:09,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:18:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-08-21 18:18:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 366. [2020-08-21 18:18:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-21 18:18:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 457 transitions. [2020-08-21 18:18:09,989 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 457 transitions. Word has length 90 [2020-08-21 18:18:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:09,990 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 457 transitions. [2020-08-21 18:18:09,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 457 transitions. [2020-08-21 18:18:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:09,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:09,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:09,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:18:09,992 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1504622653, now seen corresponding path program 1 times [2020-08-21 18:18:09,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:09,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083905850] [2020-08-21 18:18:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:10,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083905850] [2020-08-21 18:18:10,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:10,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:10,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346313041] [2020-08-21 18:18:10,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:10,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:10,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:10,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:10,227 INFO L87 Difference]: Start difference. First operand 366 states and 457 transitions. Second operand 10 states. [2020-08-21 18:18:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:11,968 INFO L93 Difference]: Finished difference Result 877 states and 1164 transitions. [2020-08-21 18:18:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:18:11,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:11,976 INFO L225 Difference]: With dead ends: 877 [2020-08-21 18:18:11,979 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 18:18:11,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:18:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 18:18:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-08-21 18:18:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-08-21 18:18:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 465 transitions. [2020-08-21 18:18:12,052 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 465 transitions. Word has length 90 [2020-08-21 18:18:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:12,052 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 465 transitions. [2020-08-21 18:18:12,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 465 transitions. [2020-08-21 18:18:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:12,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:12,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:12,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:18:12,055 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:12,056 INFO L82 PathProgramCache]: Analyzing trace with hash -523963457, now seen corresponding path program 1 times [2020-08-21 18:18:12,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:12,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846735572] [2020-08-21 18:18:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:12,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846735572] [2020-08-21 18:18:12,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:12,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:12,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380752216] [2020-08-21 18:18:12,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:12,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:12,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:12,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:12,313 INFO L87 Difference]: Start difference. First operand 376 states and 465 transitions. Second operand 10 states. [2020-08-21 18:18:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:13,863 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2020-08-21 18:18:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:18:13,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:13,869 INFO L225 Difference]: With dead ends: 915 [2020-08-21 18:18:13,869 INFO L226 Difference]: Without dead ends: 560 [2020-08-21 18:18:13,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:18:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-21 18:18:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 396. [2020-08-21 18:18:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-21 18:18:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 485 transitions. [2020-08-21 18:18:13,911 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 485 transitions. Word has length 90 [2020-08-21 18:18:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:13,911 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 485 transitions. [2020-08-21 18:18:13,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 485 transitions. [2020-08-21 18:18:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:13,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:13,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:13,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:18:13,913 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash -275816963, now seen corresponding path program 1 times [2020-08-21 18:18:13,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:13,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706587270] [2020-08-21 18:18:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:14,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706587270] [2020-08-21 18:18:14,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:14,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:14,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272272982] [2020-08-21 18:18:14,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:14,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:14,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:14,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:14,161 INFO L87 Difference]: Start difference. First operand 396 states and 485 transitions. Second operand 10 states. [2020-08-21 18:18:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:15,750 INFO L93 Difference]: Finished difference Result 939 states and 1222 transitions. [2020-08-21 18:18:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:18:15,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:15,756 INFO L225 Difference]: With dead ends: 939 [2020-08-21 18:18:15,756 INFO L226 Difference]: Without dead ends: 564 [2020-08-21 18:18:15,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:18:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-21 18:18:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 406. [2020-08-21 18:18:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-08-21 18:18:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 493 transitions. [2020-08-21 18:18:15,807 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 493 transitions. Word has length 90 [2020-08-21 18:18:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:15,807 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 493 transitions. [2020-08-21 18:18:15,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 493 transitions. [2020-08-21 18:18:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:15,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:15,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:15,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:18:15,809 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:15,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:15,810 INFO L82 PathProgramCache]: Analyzing trace with hash -348203521, now seen corresponding path program 1 times [2020-08-21 18:18:15,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:15,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874996684] [2020-08-21 18:18:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:15,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874996684] [2020-08-21 18:18:15,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:15,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:15,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080067541] [2020-08-21 18:18:15,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:15,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:15,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:15,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:15,998 INFO L87 Difference]: Start difference. First operand 406 states and 493 transitions. Second operand 10 states. [2020-08-21 18:18:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:17,803 INFO L93 Difference]: Finished difference Result 1144 states and 1493 transitions. [2020-08-21 18:18:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 18:18:17,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 18:18:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:17,811 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 18:18:17,811 INFO L226 Difference]: Without dead ends: 758 [2020-08-21 18:18:17,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-08-21 18:18:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-21 18:18:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 467. [2020-08-21 18:18:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-08-21 18:18:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 547 transitions. [2020-08-21 18:18:17,865 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 547 transitions. Word has length 90 [2020-08-21 18:18:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:17,866 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 547 transitions. [2020-08-21 18:18:17,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 547 transitions. [2020-08-21 18:18:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:18:17,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:17,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:17,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:18:17,870 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:17,870 INFO L82 PathProgramCache]: Analyzing trace with hash -286163907, now seen corresponding path program 1 times [2020-08-21 18:18:17,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:17,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350371905] [2020-08-21 18:18:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:18,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350371905] [2020-08-21 18:18:18,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:18,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:18:18,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187162570] [2020-08-21 18:18:18,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:18:18,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:18,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:18:18,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:18:18,010 INFO L87 Difference]: Start difference. First operand 467 states and 547 transitions. Second operand 7 states. [2020-08-21 18:18:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:19,662 INFO L93 Difference]: Finished difference Result 1503 states and 1877 transitions. [2020-08-21 18:18:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:18:19,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-21 18:18:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:19,670 INFO L225 Difference]: With dead ends: 1503 [2020-08-21 18:18:19,670 INFO L226 Difference]: Without dead ends: 1058 [2020-08-21 18:18:19,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:18:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-08-21 18:18:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 847. [2020-08-21 18:18:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 18:18:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1018 transitions. [2020-08-21 18:18:19,752 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1018 transitions. Word has length 90 [2020-08-21 18:18:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:19,753 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1018 transitions. [2020-08-21 18:18:19,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:18:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1018 transitions. [2020-08-21 18:18:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 18:18:19,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:19,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:19,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:18:19,755 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:19,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1417763379, now seen corresponding path program 1 times [2020-08-21 18:18:19,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:19,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091034804] [2020-08-21 18:18:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:18:19,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091034804] [2020-08-21 18:18:19,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:19,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:18:19,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126292232] [2020-08-21 18:18:19,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:18:19,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:19,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:18:19,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:18:19,895 INFO L87 Difference]: Start difference. First operand 847 states and 1018 transitions. Second operand 7 states. [2020-08-21 18:18:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:21,454 INFO L93 Difference]: Finished difference Result 2813 states and 3701 transitions. [2020-08-21 18:18:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:18:21,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-08-21 18:18:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:21,468 INFO L225 Difference]: With dead ends: 2813 [2020-08-21 18:18:21,468 INFO L226 Difference]: Without dead ends: 1993 [2020-08-21 18:18:21,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:18:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-21 18:18:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1710. [2020-08-21 18:18:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-08-21 18:18:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2141 transitions. [2020-08-21 18:18:21,640 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2141 transitions. Word has length 91 [2020-08-21 18:18:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:21,640 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2141 transitions. [2020-08-21 18:18:21,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:18:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2141 transitions. [2020-08-21 18:18:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 18:18:21,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:21,643 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:21,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:18:21,644 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:21,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:21,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1387972843, now seen corresponding path program 1 times [2020-08-21 18:18:21,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:21,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286294169] [2020-08-21 18:18:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:18:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:18:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 18:18:21,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286294169] [2020-08-21 18:18:21,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:21,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:18:21,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578036470] [2020-08-21 18:18:21,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:18:21,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:21,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:18:21,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:18:21,787 INFO L87 Difference]: Start difference. First operand 1710 states and 2141 transitions. Second operand 9 states. [2020-08-21 18:18:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:23,224 INFO L93 Difference]: Finished difference Result 3845 states and 5084 transitions. [2020-08-21 18:18:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:18:23,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-08-21 18:18:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:23,239 INFO L225 Difference]: With dead ends: 3845 [2020-08-21 18:18:23,239 INFO L226 Difference]: Without dead ends: 2157 [2020-08-21 18:18:23,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:18:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-21 18:18:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2020-08-21 18:18:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-08-21 18:18:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2232 transitions. [2020-08-21 18:18:23,470 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2232 transitions. Word has length 111 [2020-08-21 18:18:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:23,470 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2232 transitions. [2020-08-21 18:18:23,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:18:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2232 transitions. [2020-08-21 18:18:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 18:18:23,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:23,474 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:23,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:18:23,475 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:23,475 INFO L82 PathProgramCache]: Analyzing trace with hash 36587625, now seen corresponding path program 1 times [2020-08-21 18:18:23,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:23,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993168988] [2020-08-21 18:18:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:18:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:18:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 18:18:23,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993168988] [2020-08-21 18:18:23,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:23,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:18:23,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942031221] [2020-08-21 18:18:23,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:18:23,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:23,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:18:23,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:18:23,702 INFO L87 Difference]: Start difference. First operand 1767 states and 2232 transitions. Second operand 8 states. [2020-08-21 18:18:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:25,844 INFO L93 Difference]: Finished difference Result 5835 states and 7942 transitions. [2020-08-21 18:18:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:18:25,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-08-21 18:18:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:25,865 INFO L225 Difference]: With dead ends: 5835 [2020-08-21 18:18:25,865 INFO L226 Difference]: Without dead ends: 3120 [2020-08-21 18:18:25,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:18:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-08-21 18:18:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2788. [2020-08-21 18:18:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-08-21 18:18:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3646 transitions. [2020-08-21 18:18:26,297 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3646 transitions. Word has length 111 [2020-08-21 18:18:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:26,297 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3646 transitions. [2020-08-21 18:18:26,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:18:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3646 transitions. [2020-08-21 18:18:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 18:18:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:26,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 18:18:26,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 18:18:26,307 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1178118941, now seen corresponding path program 1 times [2020-08-21 18:18:26,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:26,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990866778] [2020-08-21 18:18:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:18:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:18:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:18:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:18:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-21 18:18:26,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990866778] [2020-08-21 18:18:26,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:26,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:18:26,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598699344] [2020-08-21 18:18:26,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:18:26,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:18:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:18:26,522 INFO L87 Difference]: Start difference. First operand 2788 states and 3646 transitions. Second operand 9 states. [2020-08-21 18:18:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:28,893 INFO L93 Difference]: Finished difference Result 8089 states and 11637 transitions. [2020-08-21 18:18:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:18:28,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-08-21 18:18:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:28,928 INFO L225 Difference]: With dead ends: 8089 [2020-08-21 18:18:28,929 INFO L226 Difference]: Without dead ends: 5323 [2020-08-21 18:18:28,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:18:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-08-21 18:18:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 4852. [2020-08-21 18:18:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-08-21 18:18:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6633 transitions. [2020-08-21 18:18:29,476 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6633 transitions. Word has length 155 [2020-08-21 18:18:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:29,476 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 6633 transitions. [2020-08-21 18:18:29,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:18:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6633 transitions. [2020-08-21 18:18:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 18:18:29,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:29,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 18:18:29,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 18:18:29,482 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash -390866386, now seen corresponding path program 1 times [2020-08-21 18:18:29,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:29,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142427359] [2020-08-21 18:18:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:18:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 18:18:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 18:18:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:18:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-21 18:18:29,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142427359] [2020-08-21 18:18:29,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:29,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:18:29,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620651767] [2020-08-21 18:18:29,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:18:29,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:29,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:18:29,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:18:29,741 INFO L87 Difference]: Start difference. First operand 4852 states and 6633 transitions. Second operand 10 states. [2020-08-21 18:18:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:33,219 INFO L93 Difference]: Finished difference Result 12975 states and 19533 transitions. [2020-08-21 18:18:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 18:18:33,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-21 18:18:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:33,265 INFO L225 Difference]: With dead ends: 12975 [2020-08-21 18:18:33,265 INFO L226 Difference]: Without dead ends: 6726 [2020-08-21 18:18:33,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-08-21 18:18:33,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-08-21 18:18:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6174. [2020-08-21 18:18:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-08-21 18:18:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8297 transitions. [2020-08-21 18:18:33,935 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8297 transitions. Word has length 156 [2020-08-21 18:18:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:33,936 INFO L479 AbstractCegarLoop]: Abstraction has 6174 states and 8297 transitions. [2020-08-21 18:18:33,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:18:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8297 transitions. [2020-08-21 18:18:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 18:18:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:33,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-08-21 18:18:33,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 18:18:33,946 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:33,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1382123670, now seen corresponding path program 1 times [2020-08-21 18:18:33,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:33,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208041467] [2020-08-21 18:18:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:18:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:18:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:18:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:18:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 18:18:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:18:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:18:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 18:18:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:18:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 18:18:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 18:18:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:18:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:18:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 18:18:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:18:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:18:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:18:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:18:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 18:18:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:18:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-21 18:18:34,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208041467] [2020-08-21 18:18:34,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:18:34,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:18:34,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487368313] [2020-08-21 18:18:34,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:18:34,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:18:34,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:18:34,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:18:34,255 INFO L87 Difference]: Start difference. First operand 6174 states and 8297 transitions. Second operand 11 states. [2020-08-21 18:18:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:18:36,838 INFO L93 Difference]: Finished difference Result 12270 states and 16979 transitions. [2020-08-21 18:18:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 18:18:36,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-08-21 18:18:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:18:36,855 INFO L225 Difference]: With dead ends: 12270 [2020-08-21 18:18:36,855 INFO L226 Difference]: Without dead ends: 3143 [2020-08-21 18:18:36,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:18:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-08-21 18:18:37,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2950. [2020-08-21 18:18:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2950 states. [2020-08-21 18:18:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3443 transitions. [2020-08-21 18:18:37,148 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3443 transitions. Word has length 207 [2020-08-21 18:18:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:18:37,149 INFO L479 AbstractCegarLoop]: Abstraction has 2950 states and 3443 transitions. [2020-08-21 18:18:37,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:18:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3443 transitions. [2020-08-21 18:18:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-21 18:18:37,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:18:37,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-08-21 18:18:37,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 18:18:37,159 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:18:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:18:37,159 INFO L82 PathProgramCache]: Analyzing trace with hash 89354437, now seen corresponding path program 1 times [2020-08-21 18:18:37,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:18:37,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934838664] [2020-08-21 18:18:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:18:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:18:37,189 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:18:37,189 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:18:37,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 18:18:37,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:18:37 BoogieIcfgContainer [2020-08-21 18:18:37,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:18:37,233 INFO L168 Benchmark]: Toolchain (without parser) took 38178.10 ms. Allocated memory was 138.9 MB in the beginning and 739.2 MB in the end (delta: 600.3 MB). Free memory was 99.4 MB in the beginning and 321.1 MB in the end (delta: -221.7 MB). Peak memory consumption was 378.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:18:37,234 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-08-21 18:18:37,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.00 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 99.2 MB in the beginning and 176.0 MB in the end (delta: -76.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:18:37,235 INFO L168 Benchmark]: Boogie Preprocessor took 46.37 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 173.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:18:37,236 INFO L168 Benchmark]: RCFGBuilder took 598.41 ms. Allocated memory is still 200.3 MB. Free memory was 173.8 MB in the beginning and 137.7 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:18:37,237 INFO L168 Benchmark]: TraceAbstraction took 37105.06 ms. Allocated memory was 200.3 MB in the beginning and 739.2 MB in the end (delta: 539.0 MB). Free memory was 137.0 MB in the beginning and 321.1 MB in the end (delta: -184.2 MB). Peak memory consumption was 354.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:18:37,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 420.00 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 99.2 MB in the beginning and 176.0 MB in the end (delta: -76.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.37 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 173.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 598.41 ms. Allocated memory is still 200.3 MB. Free memory was 173.8 MB in the beginning and 137.7 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37105.06 ms. Allocated memory was 200.3 MB in the beginning and 739.2 MB in the end (delta: 539.0 MB). Free memory was 137.0 MB in the beginning and 321.1 MB in the end (delta: -184.2 MB). Peak memory consumption was 354.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.9s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2605 SDtfs, 11531 SDslu, 735 SDs, 0 SdLazy, 15853 SolverSat, 5829 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 3916 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1939 NumberOfCodeBlocks, 1939 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1715 ConstructedInterpolants, 0 QuantifiedInterpolants, 487945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 237/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...