/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/token_ring.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:11:44,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:11:44,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:11:44,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:11:44,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:11:44,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:11:44,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:11:44,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:11:44,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:11:44,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:11:44,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:11:44,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:11:44,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:11:44,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:11:44,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:11:44,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:11:44,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:11:44,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:11:44,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:11:44,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:11:44,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:11:44,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:11:44,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:11:44,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:11:44,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:11:44,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:11:44,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:11:44,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:11:44,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:11:44,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:11:44,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:11:44,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:11:44,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:11:44,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:11:44,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:11:44,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:11:44,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:11:44,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:11:44,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:11:44,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:11:44,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:11:44,520 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 [2020-08-22 03:11:44,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:11:44,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:11:44,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:11:44,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:11:44,545 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:11:44,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:11:44,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:11:44,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:11:44,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:11:44,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:11:44,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:11:44,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:11:44,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:11:44,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:11:44,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:11:44,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:11:44,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:11:44,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:11:44,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:11:44,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:11:44,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:11:44,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:11:44,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:11:44,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:11:44,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:11:44,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:11:44,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:11:44,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:11:44,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:11:44,550 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:11:44,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:11:44,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:11:44,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:11:44,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:11:44,918 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:11:44,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-08-22 03:11:44,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdeed4a4e/09898f34ce834034abe958f05777b068/FLAGa53c9fa51 [2020-08-22 03:11:45,505 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:11:45,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-08-22 03:11:45,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdeed4a4e/09898f34ce834034abe958f05777b068/FLAGa53c9fa51 [2020-08-22 03:11:45,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdeed4a4e/09898f34ce834034abe958f05777b068 [2020-08-22 03:11:45,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:11:45,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:11:45,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:11:45,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:11:45,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:11:45,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:11:45" (1/1) ... [2020-08-22 03:11:45,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2584cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:45, skipping insertion in model container [2020-08-22 03:11:45,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:11:45" (1/1) ... [2020-08-22 03:11:45,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:11:45,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:11:46,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:11:46,247 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:11:46,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:11:46,473 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:11:46,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46 WrapperNode [2020-08-22 03:11:46,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:11:46,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:11:46,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:11:46,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:11:46,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (1/1) ... [2020-08-22 03:11:46,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:11:46,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:11:46,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:11:46,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:11:46,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (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 [2020-08-22 03:11:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:11:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:11:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 03:11:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 03:11:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 03:11:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 03:11:46,593 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 03:11:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 03:11:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 03:11:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 03:11:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 03:11:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 03:11:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 03:11:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 03:11:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 03:11:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 03:11:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:11:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:11:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 03:11:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 03:11:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 03:11:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-22 03:11:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 03:11:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:11:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 03:11:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 03:11:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-22 03:11:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 03:11:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 03:11:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 03:11:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 03:11:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 03:11:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 03:11:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 03:11:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 03:11:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 03:11:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 03:11:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 03:11:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 03:11:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:11:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:11:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:11:47,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:11:47,250 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:11:47,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:11:47 BoogieIcfgContainer [2020-08-22 03:11:47,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:11:47,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:11:47,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:11:47,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:11:47,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:11:45" (1/3) ... [2020-08-22 03:11:47,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7730468b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:11:47, skipping insertion in model container [2020-08-22 03:11:47,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:11:46" (2/3) ... [2020-08-22 03:11:47,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7730468b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:11:47, skipping insertion in model container [2020-08-22 03:11:47,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:11:47" (3/3) ... [2020-08-22 03:11:47,266 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2020-08-22 03:11:47,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:11:47,286 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:11:47,300 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:11:47,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:11:47,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:11:47,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:11:47,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:11:47,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:11:47,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:11:47,330 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:11:47,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:11:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-22 03:11:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:11:47,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:11:47,368 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, 1] [2020-08-22 03:11:47,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:11:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:11:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash -67309704, now seen corresponding path program 1 times [2020-08-22 03:11:47,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:11:47,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114399431] [2020-08-22 03:11:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:11:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:11:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:47,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:11:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:11:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:11:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:47,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:11:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:11:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:11:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:11:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:11:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:11:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:11:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:11:48,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114399431] [2020-08-22 03:11:48,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:11:48,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 03:11:48,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85155095] [2020-08-22 03:11:48,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 03:11:48,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:11:48,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 03:11:48,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:11:48,150 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 14 states. [2020-08-22 03:11:51,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:11:51,083 INFO L93 Difference]: Finished difference Result 449 states and 710 transitions. [2020-08-22 03:11:51,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 03:11:51,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-08-22 03:11:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:11:51,105 INFO L225 Difference]: With dead ends: 449 [2020-08-22 03:11:51,106 INFO L226 Difference]: Without dead ends: 276 [2020-08-22 03:11:51,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-08-22 03:11:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-08-22 03:11:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 177. [2020-08-22 03:11:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 03:11:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 237 transitions. [2020-08-22 03:11:51,201 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 237 transitions. Word has length 92 [2020-08-22 03:11:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:11:51,202 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 237 transitions. [2020-08-22 03:11:51,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 03:11:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 237 transitions. [2020-08-22 03:11:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:11:51,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:11:51,207 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, 1] [2020-08-22 03:11:51,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:11:51,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:11:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:11:51,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2098275908, now seen corresponding path program 1 times [2020-08-22 03:11:51,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:11:51,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56103503] [2020-08-22 03:11:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:11:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:11:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:11:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:11:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:11:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:11:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:11:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:11:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:11:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:11:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:11:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:11:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:11:51,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56103503] [2020-08-22 03:11:51,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:11:51,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:11:51,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176512010] [2020-08-22 03:11:51,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:11:51,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:11:51,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:11:51,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:11:51,431 INFO L87 Difference]: Start difference. First operand 177 states and 237 transitions. Second operand 10 states. [2020-08-22 03:11:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:11:52,946 INFO L93 Difference]: Finished difference Result 425 states and 610 transitions. [2020-08-22 03:11:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:11:52,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 03:11:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:11:52,953 INFO L225 Difference]: With dead ends: 425 [2020-08-22 03:11:52,956 INFO L226 Difference]: Without dead ends: 268 [2020-08-22 03:11:52,960 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 [2020-08-22 03:11:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-22 03:11:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 177. [2020-08-22 03:11:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 03:11:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 234 transitions. [2020-08-22 03:11:53,012 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 234 transitions. Word has length 92 [2020-08-22 03:11:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:11:53,013 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 234 transitions. [2020-08-22 03:11:53,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:11:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 234 transitions. [2020-08-22 03:11:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:11:53,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:11:53,017 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, 1] [2020-08-22 03:11:53,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:11:53,018 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:11:53,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:11:53,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1653808840, now seen corresponding path program 1 times [2020-08-22 03:11:53,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:11:53,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277818699] [2020-08-22 03:11:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:11:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:11:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:11:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:11:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:11:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:11:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:11:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:11:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:11:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:11:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:11:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:11:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:11:53,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277818699] [2020-08-22 03:11:53,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:11:53,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:11:53,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860768381] [2020-08-22 03:11:53,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:11:53,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:11:53,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:11:53,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:11:53,277 INFO L87 Difference]: Start difference. First operand 177 states and 234 transitions. Second operand 10 states. [2020-08-22 03:11:55,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:11:55,224 INFO L93 Difference]: Finished difference Result 504 states and 747 transitions. [2020-08-22 03:11:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:11:55,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 03:11:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:11:55,234 INFO L225 Difference]: With dead ends: 504 [2020-08-22 03:11:55,234 INFO L226 Difference]: Without dead ends: 347 [2020-08-22 03:11:55,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-22 03:11:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-08-22 03:11:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 213. [2020-08-22 03:11:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 03:11:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2020-08-22 03:11:55,278 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 92 [2020-08-22 03:11:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:11:55,278 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2020-08-22 03:11:55,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:11:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2020-08-22 03:11:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:11:55,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:11:55,281 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, 1] [2020-08-22 03:11:55,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:11:55,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:11:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:11:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash -550041895, now seen corresponding path program 1 times [2020-08-22 03:11:55,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:11:55,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884477465] [2020-08-22 03:11:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:11:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:11:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:11:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:11:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:11:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:11:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:11:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:11:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:11:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:11:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:11:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:11:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:11:55,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884477465] [2020-08-22 03:11:55,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:11:55,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:11:55,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993948274] [2020-08-22 03:11:55,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:11:55,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:11:55,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:11:55,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:11:55,466 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand 10 states. [2020-08-22 03:11:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:11:57,461 INFO L93 Difference]: Finished difference Result 586 states and 840 transitions. [2020-08-22 03:11:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 03:11:57,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 03:11:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:11:57,466 INFO L225 Difference]: With dead ends: 586 [2020-08-22 03:11:57,466 INFO L226 Difference]: Without dead ends: 393 [2020-08-22 03:11:57,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-22 03:11:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-08-22 03:11:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 249. [2020-08-22 03:11:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-08-22 03:11:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 312 transitions. [2020-08-22 03:11:57,520 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 312 transitions. Word has length 92 [2020-08-22 03:11:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:11:57,520 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 312 transitions. [2020-08-22 03:11:57,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:11:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 312 transitions. [2020-08-22 03:11:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:11:57,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:11:57,525 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, 1] [2020-08-22 03:11:57,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:11:57,526 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:11:57,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:11:57,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1219969707, now seen corresponding path program 1 times [2020-08-22 03:11:57,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:11:57,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271157350] [2020-08-22 03:11:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:11:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:11:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:11:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:11:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:11:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:11:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:11:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:11:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:11:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:11:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:11:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:11:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:11:57,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271157350] [2020-08-22 03:11:57,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:11:57,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:11:57,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958022573] [2020-08-22 03:11:57,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:11:57,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:11:57,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:11:57,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:11:57,705 INFO L87 Difference]: Start difference. First operand 249 states and 312 transitions. Second operand 10 states. [2020-08-22 03:11:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:11:59,649 INFO L93 Difference]: Finished difference Result 663 states and 922 transitions. [2020-08-22 03:11:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:11:59,649 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 03:11:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:11:59,654 INFO L225 Difference]: With dead ends: 663 [2020-08-22 03:11:59,654 INFO L226 Difference]: Without dead ends: 434 [2020-08-22 03:11:59,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-22 03:11:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-22 03:11:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 282. [2020-08-22 03:11:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-08-22 03:11:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 345 transitions. [2020-08-22 03:11:59,690 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 345 transitions. Word has length 92 [2020-08-22 03:11:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:11:59,690 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 345 transitions. [2020-08-22 03:11:59,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:11:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 345 transitions. [2020-08-22 03:11:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:11:59,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:11:59,692 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, 1] [2020-08-22 03:11:59,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:11:59,693 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:11:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:11:59,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1929357560, now seen corresponding path program 1 times [2020-08-22 03:11:59,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:11:59,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953570566] [2020-08-22 03:11:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:11:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:11:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:11:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:11:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:11:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:11:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:11:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:11:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:11:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:11:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:11:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:11:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:11:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:11:59,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953570566] [2020-08-22 03:11:59,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:11:59,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:11:59,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099047387] [2020-08-22 03:11:59,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:11:59,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:11:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:11:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:11:59,892 INFO L87 Difference]: Start difference. First operand 282 states and 345 transitions. Second operand 10 states. [2020-08-22 03:12:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:01,637 INFO L93 Difference]: Finished difference Result 674 states and 877 transitions. [2020-08-22 03:12:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:12:01,638 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 03:12:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:01,642 INFO L225 Difference]: With dead ends: 674 [2020-08-22 03:12:01,642 INFO L226 Difference]: Without dead ends: 413 [2020-08-22 03:12:01,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:12:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-22 03:12:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 287. [2020-08-22 03:12:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-22 03:12:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 347 transitions. [2020-08-22 03:12:01,682 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 347 transitions. Word has length 92 [2020-08-22 03:12:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:01,682 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 347 transitions. [2020-08-22 03:12:01,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:12:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 347 transitions. [2020-08-22 03:12:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:12:01,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:01,684 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, 1] [2020-08-22 03:12:01,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:12:01,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:01,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1031964282, now seen corresponding path program 1 times [2020-08-22 03:12:01,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:01,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470987907] [2020-08-22 03:12:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:12:01,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470987907] [2020-08-22 03:12:01,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:01,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:12:01,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506109548] [2020-08-22 03:12:01,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:12:01,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:01,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:12:01,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:12:01,956 INFO L87 Difference]: Start difference. First operand 287 states and 347 transitions. Second operand 10 states. [2020-08-22 03:12:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:04,515 INFO L93 Difference]: Finished difference Result 1068 states and 1350 transitions. [2020-08-22 03:12:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 03:12:04,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 03:12:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:04,523 INFO L225 Difference]: With dead ends: 1068 [2020-08-22 03:12:04,524 INFO L226 Difference]: Without dead ends: 801 [2020-08-22 03:12:04,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-08-22 03:12:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-08-22 03:12:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 591. [2020-08-22 03:12:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-22 03:12:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 707 transitions. [2020-08-22 03:12:04,602 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 707 transitions. Word has length 92 [2020-08-22 03:12:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:04,602 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 707 transitions. [2020-08-22 03:12:04,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:12:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 707 transitions. [2020-08-22 03:12:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 03:12:04,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:04,604 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, 1] [2020-08-22 03:12:04,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:12:04,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:04,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1054596536, now seen corresponding path program 1 times [2020-08-22 03:12:04,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:04,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040086577] [2020-08-22 03:12:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:12:04,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040086577] [2020-08-22 03:12:04,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:04,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 03:12:04,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956327658] [2020-08-22 03:12:04,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 03:12:04,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:04,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 03:12:04,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 03:12:04,780 INFO L87 Difference]: Start difference. First operand 591 states and 707 transitions. Second operand 7 states. [2020-08-22 03:12:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:06,654 INFO L93 Difference]: Finished difference Result 2051 states and 2640 transitions. [2020-08-22 03:12:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:12:06,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-22 03:12:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:06,670 INFO L225 Difference]: With dead ends: 2051 [2020-08-22 03:12:06,670 INFO L226 Difference]: Without dead ends: 1481 [2020-08-22 03:12:06,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:12:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-08-22 03:12:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1207. [2020-08-22 03:12:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-08-22 03:12:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1495 transitions. [2020-08-22 03:12:06,817 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1495 transitions. Word has length 92 [2020-08-22 03:12:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:06,818 INFO L479 AbstractCegarLoop]: Abstraction has 1207 states and 1495 transitions. [2020-08-22 03:12:06,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 03:12:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1495 transitions. [2020-08-22 03:12:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 03:12:06,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:06,823 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, 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] [2020-08-22 03:12:06,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:12:06,823 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:06,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:06,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1357284192, now seen corresponding path program 1 times [2020-08-22 03:12:06,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:06,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669494487] [2020-08-22 03:12:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:12:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 03:12:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 03:12:07,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669494487] [2020-08-22 03:12:07,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:07,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:12:07,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642715804] [2020-08-22 03:12:07,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:12:07,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:12:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:12:07,086 INFO L87 Difference]: Start difference. First operand 1207 states and 1495 transitions. Second operand 9 states. [2020-08-22 03:12:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:09,730 INFO L93 Difference]: Finished difference Result 3860 states and 4987 transitions. [2020-08-22 03:12:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 03:12:09,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-08-22 03:12:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:09,749 INFO L225 Difference]: With dead ends: 3860 [2020-08-22 03:12:09,750 INFO L226 Difference]: Without dead ends: 2675 [2020-08-22 03:12:09,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-22 03:12:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-08-22 03:12:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2303. [2020-08-22 03:12:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-08-22 03:12:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2940 transitions. [2020-08-22 03:12:10,002 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2940 transitions. Word has length 147 [2020-08-22 03:12:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:10,004 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2940 transitions. [2020-08-22 03:12:10,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:12:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2940 transitions. [2020-08-22 03:12:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-08-22 03:12:10,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:10,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:12:10,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:12:10,015 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:10,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1620831515, now seen corresponding path program 1 times [2020-08-22 03:12:10,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:10,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524377561] [2020-08-22 03:12:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 03:12:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 03:12:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 03:12:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 03:12:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 03:12:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-08-22 03:12:10,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524377561] [2020-08-22 03:12:10,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:10,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:12:10,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275569216] [2020-08-22 03:12:10,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:12:10,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:10,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:12:10,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:12:10,434 INFO L87 Difference]: Start difference. First operand 2303 states and 2940 transitions. Second operand 11 states. [2020-08-22 03:12:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:12,427 INFO L93 Difference]: Finished difference Result 4832 states and 6206 transitions. [2020-08-22 03:12:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:12:12,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-08-22 03:12:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:12,446 INFO L225 Difference]: With dead ends: 4832 [2020-08-22 03:12:12,446 INFO L226 Difference]: Without dead ends: 2550 [2020-08-22 03:12:12,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:12:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2020-08-22 03:12:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2296. [2020-08-22 03:12:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2020-08-22 03:12:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2926 transitions. [2020-08-22 03:12:12,711 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2926 transitions. Word has length 248 [2020-08-22 03:12:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:12,712 INFO L479 AbstractCegarLoop]: Abstraction has 2296 states and 2926 transitions. [2020-08-22 03:12:12,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:12:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2926 transitions. [2020-08-22 03:12:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-08-22 03:12:12,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:12,720 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, 3, 3, 3, 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] [2020-08-22 03:12:12,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:12:12,720 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:12,721 INFO L82 PathProgramCache]: Analyzing trace with hash 674078602, now seen corresponding path program 1 times [2020-08-22 03:12:12,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:12,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178414695] [2020-08-22 03:12:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:12:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 03:12:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 03:12:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-08-22 03:12:13,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178414695] [2020-08-22 03:12:13,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:13,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:12:13,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769115028] [2020-08-22 03:12:13,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:12:13,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:13,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:12:13,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:12:13,124 INFO L87 Difference]: Start difference. First operand 2296 states and 2926 transitions. Second operand 10 states. [2020-08-22 03:12:15,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:15,701 INFO L93 Difference]: Finished difference Result 6861 states and 9505 transitions. [2020-08-22 03:12:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:12:15,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2020-08-22 03:12:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:15,730 INFO L225 Difference]: With dead ends: 6861 [2020-08-22 03:12:15,731 INFO L226 Difference]: Without dead ends: 4586 [2020-08-22 03:12:15,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-08-22 03:12:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2020-08-22 03:12:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4198. [2020-08-22 03:12:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4198 states. [2020-08-22 03:12:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 5326 transitions. [2020-08-22 03:12:16,215 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 5326 transitions. Word has length 191 [2020-08-22 03:12:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:16,216 INFO L479 AbstractCegarLoop]: Abstraction has 4198 states and 5326 transitions. [2020-08-22 03:12:16,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:12:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 5326 transitions. [2020-08-22 03:12:16,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 03:12:16,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:16,223 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, 3, 3, 3, 3, 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] [2020-08-22 03:12:16,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:12:16,223 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2111585836, now seen corresponding path program 1 times [2020-08-22 03:12:16,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:16,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455093947] [2020-08-22 03:12:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:12:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 03:12:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 03:12:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 03:12:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 03:12:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-22 03:12:16,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455093947] [2020-08-22 03:12:16,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:12:16,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:12:16,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892988861] [2020-08-22 03:12:16,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:12:16,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:16,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:12:16,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:12:16,662 INFO L87 Difference]: Start difference. First operand 4198 states and 5326 transitions. Second operand 13 states. [2020-08-22 03:12:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:20,225 INFO L93 Difference]: Finished difference Result 11304 states and 15162 transitions. [2020-08-22 03:12:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 03:12:20,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-22 03:12:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:20,346 INFO L225 Difference]: With dead ends: 11304 [2020-08-22 03:12:20,347 INFO L226 Difference]: Without dead ends: 5377 [2020-08-22 03:12:20,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2020-08-22 03:12:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2020-08-22 03:12:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 4715. [2020-08-22 03:12:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4715 states. [2020-08-22 03:12:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 5844 transitions. [2020-08-22 03:12:21,180 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 5844 transitions. Word has length 192 [2020-08-22 03:12:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:21,181 INFO L479 AbstractCegarLoop]: Abstraction has 4715 states and 5844 transitions. [2020-08-22 03:12:21,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:12:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 5844 transitions. [2020-08-22 03:12:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-08-22 03:12:21,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:21,195 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:12:21,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 03:12:21,196 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:21,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1309799228, now seen corresponding path program 1 times [2020-08-22 03:12:21,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:21,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558983431] [2020-08-22 03:12:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 03:12:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:12:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 03:12:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 03:12:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 03:12:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 03:12:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-22 03:12:21,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558983431] [2020-08-22 03:12:21,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:12:21,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 03:12:21,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849421058] [2020-08-22 03:12:21,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:12:21,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:21,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:12:21,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:12:21,614 INFO L87 Difference]: Start difference. First operand 4715 states and 5844 transitions. Second operand 10 states. [2020-08-22 03:12:22,030 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-08-22 03:12:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:24,542 INFO L93 Difference]: Finished difference Result 9794 states and 12543 transitions. [2020-08-22 03:12:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 03:12:24,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-08-22 03:12:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:24,569 INFO L225 Difference]: With dead ends: 9794 [2020-08-22 03:12:24,569 INFO L226 Difference]: Without dead ends: 5101 [2020-08-22 03:12:24,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:12:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2020-08-22 03:12:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 4723. [2020-08-22 03:12:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4723 states. [2020-08-22 03:12:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 5800 transitions. [2020-08-22 03:12:25,061 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 5800 transitions. Word has length 219 [2020-08-22 03:12:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:25,061 INFO L479 AbstractCegarLoop]: Abstraction has 4723 states and 5800 transitions. [2020-08-22 03:12:25,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:12:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 5800 transitions. [2020-08-22 03:12:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-08-22 03:12:25,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:25,069 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:12:25,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 03:12:25,070 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:25,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1042203604, now seen corresponding path program 1 times [2020-08-22 03:12:25,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:25,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226644310] [2020-08-22 03:12:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:12:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 03:12:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 03:12:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 03:12:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 03:12:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 03:12:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-08-22 03:12:25,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226644310] [2020-08-22 03:12:25,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:12:25,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:12:25,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893813746] [2020-08-22 03:12:25,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:12:25,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:12:25,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:12:25,500 INFO L87 Difference]: Start difference. First operand 4723 states and 5800 transitions. Second operand 13 states. [2020-08-22 03:12:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:29,182 INFO L93 Difference]: Finished difference Result 14278 states and 19378 transitions. [2020-08-22 03:12:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 03:12:29,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-08-22 03:12:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:29,227 INFO L225 Difference]: With dead ends: 14278 [2020-08-22 03:12:29,228 INFO L226 Difference]: Without dead ends: 9577 [2020-08-22 03:12:29,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 03:12:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2020-08-22 03:12:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 8707. [2020-08-22 03:12:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8707 states. [2020-08-22 03:12:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8707 states to 8707 states and 10918 transitions. [2020-08-22 03:12:29,953 INFO L78 Accepts]: Start accepts. Automaton has 8707 states and 10918 transitions. Word has length 219 [2020-08-22 03:12:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:29,954 INFO L479 AbstractCegarLoop]: Abstraction has 8707 states and 10918 transitions. [2020-08-22 03:12:29,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:12:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8707 states and 10918 transitions. [2020-08-22 03:12:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-08-22 03:12:29,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:29,966 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:12:29,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 03:12:29,966 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:29,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908987, now seen corresponding path program 1 times [2020-08-22 03:12:29,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:29,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309308540] [2020-08-22 03:12:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:12:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 03:12:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 03:12:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 03:12:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 03:12:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-08-22 03:12:30,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309308540] [2020-08-22 03:12:30,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:30,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:12:30,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419167135] [2020-08-22 03:12:30,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:12:30,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:12:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:12:30,329 INFO L87 Difference]: Start difference. First operand 8707 states and 10918 transitions. Second operand 10 states. [2020-08-22 03:12:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:32,037 INFO L93 Difference]: Finished difference Result 11291 states and 14244 transitions. [2020-08-22 03:12:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:12:32,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-08-22 03:12:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:32,074 INFO L225 Difference]: With dead ends: 11291 [2020-08-22 03:12:32,074 INFO L226 Difference]: Without dead ends: 9299 [2020-08-22 03:12:32,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-08-22 03:12:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2020-08-22 03:12:32,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 8701. [2020-08-22 03:12:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8701 states. [2020-08-22 03:12:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8701 states to 8701 states and 10907 transitions. [2020-08-22 03:12:32,758 INFO L78 Accepts]: Start accepts. Automaton has 8701 states and 10907 transitions. Word has length 213 [2020-08-22 03:12:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:32,759 INFO L479 AbstractCegarLoop]: Abstraction has 8701 states and 10907 transitions. [2020-08-22 03:12:32,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:12:32,759 INFO L276 IsEmpty]: Start isEmpty. Operand 8701 states and 10907 transitions. [2020-08-22 03:12:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-22 03:12:32,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:32,771 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:12:32,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 03:12:32,772 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1521478673, now seen corresponding path program 1 times [2020-08-22 03:12:32,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:32,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636140239] [2020-08-22 03:12:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:12:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 03:12:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 03:12:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-22 03:12:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 03:12:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-08-22 03:12:33,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636140239] [2020-08-22 03:12:33,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:12:33,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 03:12:33,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986983430] [2020-08-22 03:12:33,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:12:33,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:33,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:12:33,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:12:33,095 INFO L87 Difference]: Start difference. First operand 8701 states and 10907 transitions. Second operand 9 states. [2020-08-22 03:12:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:35,862 INFO L93 Difference]: Finished difference Result 24652 states and 32802 transitions. [2020-08-22 03:12:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:12:35,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2020-08-22 03:12:35,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:35,925 INFO L225 Difference]: With dead ends: 24652 [2020-08-22 03:12:35,926 INFO L226 Difference]: Without dead ends: 15973 [2020-08-22 03:12:35,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:12:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15973 states. [2020-08-22 03:12:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15973 to 15503. [2020-08-22 03:12:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15503 states. [2020-08-22 03:12:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15503 states to 15503 states and 19447 transitions. [2020-08-22 03:12:37,752 INFO L78 Accepts]: Start accepts. Automaton has 15503 states and 19447 transitions. Word has length 214 [2020-08-22 03:12:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:37,753 INFO L479 AbstractCegarLoop]: Abstraction has 15503 states and 19447 transitions. [2020-08-22 03:12:37,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:12:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15503 states and 19447 transitions. [2020-08-22 03:12:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-08-22 03:12:37,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:37,836 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:12:37,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 03:12:37,836 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1840243563, now seen corresponding path program 1 times [2020-08-22 03:12:37,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:37,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068965150] [2020-08-22 03:12:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:12:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:12:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:12:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:12:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:12:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:12:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 03:12:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 03:12:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 03:12:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 03:12:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 03:12:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:12:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 03:12:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:12:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:12:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:12:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:12:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 03:12:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-22 03:12:38,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068965150] [2020-08-22 03:12:38,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:12:38,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:12:38,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063752846] [2020-08-22 03:12:38,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:12:38,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:12:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:12:38,207 INFO L87 Difference]: Start difference. First operand 15503 states and 19447 transitions. Second operand 13 states.