/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:22:32,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:22:32,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:22:32,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:22:32,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:22:32,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:22:32,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:22:32,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:22:32,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:22:32,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:22:32,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:22:32,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:22:32,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:22:32,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:22:32,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:22:32,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:22:32,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:22:32,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:22:32,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:22:32,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:22:32,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:22:32,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:22:32,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:22:32,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:22:32,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:22:32,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:22:32,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:22:32,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:22:32,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:22:32,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:22:32,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:22:32,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:22:32,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:22:32,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:22:32,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:22:32,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:22:32,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:22:32,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:22:32,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:22:32,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:22:32,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:22:32,779 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 [2020-10-13 06:22:32,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:22:32,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:22:32,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:22:32,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:22:32,816 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:22:32,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:22:32,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:22:32,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:22:32,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:22:32,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:22:32,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:22:32,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:22:32,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:22:32,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:22:32,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:22:32,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:22:32,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:22:32,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:22:32,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:22:32,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:22:32,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:22:32,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:22:32,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:22:32,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:22:32,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:22:32,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:22:32,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:22:32,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:22:32,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:22:32,822 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:22:33,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:22:33,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:22:33,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:22:33,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:22:33,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:22:33,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41.c [2020-10-13 06:22:33,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa1db7c62/f3546f00e05b4d299ce812690892aa7f/FLAGc68f0e0cf [2020-10-13 06:22:33,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:22:33,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label41.c [2020-10-13 06:22:33,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa1db7c62/f3546f00e05b4d299ce812690892aa7f/FLAGc68f0e0cf [2020-10-13 06:22:33,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa1db7c62/f3546f00e05b4d299ce812690892aa7f [2020-10-13 06:22:33,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:22:33,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:22:33,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:22:33,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:22:34,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:22:34,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:22:33" (1/1) ... [2020-10-13 06:22:34,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a03cc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:34, skipping insertion in model container [2020-10-13 06:22:34,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:22:33" (1/1) ... [2020-10-13 06:22:34,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:22:34,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:22:35,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:22:35,111 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:22:35,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:22:35,497 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:22:35,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35 WrapperNode [2020-10-13 06:22:35,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:22:35,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:22:35,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:22:35,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:22:35,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (1/1) ... [2020-10-13 06:22:35,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:22:35,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:22:35,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:22:35,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:22:35,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (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 [2020-10-13 06:22:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:22:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:22:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:22:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:22:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:22:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:22:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:22:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:22:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:22:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:22:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:22:37,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:22:37,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:22:37,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:22:37 BoogieIcfgContainer [2020-10-13 06:22:37,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:22:37,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:22:37,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:22:37,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:22:37,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:22:33" (1/3) ... [2020-10-13 06:22:37,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15193428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:22:37, skipping insertion in model container [2020-10-13 06:22:37,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:35" (2/3) ... [2020-10-13 06:22:37,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15193428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:22:37, skipping insertion in model container [2020-10-13 06:22:37,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:22:37" (3/3) ... [2020-10-13 06:22:37,567 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label41.c [2020-10-13 06:22:37,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:22:37,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:22:37,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:22:37,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:22:37,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:22:37,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:22:37,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:22:37,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:22:37,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:22:37,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:22:37,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:22:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:22:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 06:22:37,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:37,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:37,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash 471766589, now seen corresponding path program 1 times [2020-10-13 06:22:37,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:37,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473921348] [2020-10-13 06:22:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:42,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 06:22:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:22:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4530 [2020-10-13 06:22:42,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:22:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:22:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:22:42,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:22:43,892 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 06:22:44,127 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-13 06:22:44,393 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-13 06:22:44,700 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2020-10-13 06:22:45,037 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2020-10-13 06:22:45,621 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 95 [2020-10-13 06:22:46,244 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 89 [2020-10-13 06:22:46,758 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 82 [2020-10-13 06:22:47,259 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 75 [2020-10-13 06:22:47,653 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 59 [2020-10-13 06:22:47,823 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:47,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:47,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:22:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:22:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:48,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473921348] [2020-10-13 06:22:48,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:22:48,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:22:48,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113848146] [2020-10-13 06:22:49,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:22:49,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:22:49,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:22:49,017 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:22:49,433 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 06:22:50,253 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-13 06:22:51,085 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 188 [2020-10-13 06:22:52,036 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2020-10-13 06:22:53,385 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 232 DAG size of output: 203 [2020-10-13 06:22:54,982 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 233 DAG size of output: 200 [2020-10-13 06:22:56,748 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 237 DAG size of output: 196 [2020-10-13 06:23:00,464 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 239 DAG size of output: 193 [2020-10-13 06:23:01,670 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 189 [2020-10-13 06:23:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:04,934 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:23:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:23:04,938 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 188 [2020-10-13 06:23:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:04,956 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:23:04,957 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:23:04,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:23:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:23:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:23:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:23:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:23:05,045 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 188 [2020-10-13 06:23:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:05,046 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:23:05,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:23:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:23:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-13 06:23:05,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:05,052 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:05,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:23:05,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:05,053 INFO L82 PathProgramCache]: Analyzing trace with hash -189677834, now seen corresponding path program 1 times [2020-10-13 06:23:05,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:05,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124182629] [2020-10-13 06:23:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 06:23:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4268 [2020-10-13 06:23:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:23:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:23:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:23:09,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:10,361 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-13 06:23:10,509 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-13 06:23:10,814 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:23:11,078 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-10-13 06:23:11,266 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-13 06:23:11,427 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 06:23:11,566 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-13 06:23:11,821 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:11,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:11,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:23:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:23:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:12,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:12,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:23:12,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:23:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:23:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:23:12,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124182629] [2020-10-13 06:23:12,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:12,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:23:12,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853746730] [2020-10-13 06:23:12,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:23:12,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:12,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:23:12,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:23:12,733 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:23:12,977 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 06:23:13,392 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2020-10-13 06:23:13,762 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-13 06:23:14,089 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-13 06:23:14,472 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 06:23:15,264 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 197 [2020-10-13 06:23:16,806 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 194 [2020-10-13 06:23:19,021 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 191 [2020-10-13 06:23:22,123 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 188 [2020-10-13 06:23:22,947 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 183 [2020-10-13 06:23:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:25,680 INFO L93 Difference]: Finished difference Result 980 states and 1587 transitions. [2020-10-13 06:23:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 06:23:25,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 199 [2020-10-13 06:23:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:25,692 INFO L225 Difference]: With dead ends: 980 [2020-10-13 06:23:25,692 INFO L226 Difference]: Without dead ends: 737 [2020-10-13 06:23:25,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=208, Invalid=548, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:23:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-13 06:23:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 729. [2020-10-13 06:23:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-13 06:23:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 983 transitions. [2020-10-13 06:23:25,750 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 983 transitions. Word has length 199 [2020-10-13 06:23:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:25,751 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 983 transitions. [2020-10-13 06:23:25,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:23:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 983 transitions. [2020-10-13 06:23:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 06:23:25,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:25,756 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:25,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:23:25,757 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:25,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1036489406, now seen corresponding path program 1 times [2020-10-13 06:23:25,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:25,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367519845] [2020-10-13 06:23:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:27,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:27,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 06:23:27,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-13 06:23:27,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:23:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:23:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:28,456 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:28,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:23:28,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:23:28,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:23:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:23:28,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 06:23:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:23:29,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367519845] [2020-10-13 06:23:29,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:29,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:23:29,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740512283] [2020-10-13 06:23:29,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:23:29,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:29,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:23:29,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:23:29,332 INFO L87 Difference]: Start difference. First operand 729 states and 983 transitions. Second operand 5 states. [2020-10-13 06:23:29,696 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 06:23:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:32,309 INFO L93 Difference]: Finished difference Result 1157 states and 1710 transitions. [2020-10-13 06:23:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:23:32,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-13 06:23:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:32,316 INFO L225 Difference]: With dead ends: 1157 [2020-10-13 06:23:32,317 INFO L226 Difference]: Without dead ends: 721 [2020-10-13 06:23:32,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:23:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-10-13 06:23:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 717. [2020-10-13 06:23:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-10-13 06:23:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 924 transitions. [2020-10-13 06:23:32,354 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 924 transitions. Word has length 209 [2020-10-13 06:23:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:32,354 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 924 transitions. [2020-10-13 06:23:32,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:23:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 924 transitions. [2020-10-13 06:23:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 06:23:32,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:32,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:32,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:23:32,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2102298406, now seen corresponding path program 1 times [2020-10-13 06:23:32,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:32,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532959044] [2020-10-13 06:23:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:32,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 06:23:34,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-13 06:23:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:23:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-13 06:23:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:34,956 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:34,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:34,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:34,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:34,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:35,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:35,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:35,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:23:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:23:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:23:35,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532959044] [2020-10-13 06:23:35,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:35,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:23:35,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444158335] [2020-10-13 06:23:35,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:23:35,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:35,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:23:35,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:23:35,176 INFO L87 Difference]: Start difference. First operand 717 states and 924 transitions. Second operand 6 states. [2020-10-13 06:23:35,480 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:35,625 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:39,332 INFO L93 Difference]: Finished difference Result 2492 states and 3324 transitions. [2020-10-13 06:23:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:23:39,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2020-10-13 06:23:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:39,344 INFO L225 Difference]: With dead ends: 2492 [2020-10-13 06:23:39,344 INFO L226 Difference]: Without dead ends: 1660 [2020-10-13 06:23:39,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:23:39,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-10-13 06:23:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1602. [2020-10-13 06:23:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2020-10-13 06:23:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2073 transitions. [2020-10-13 06:23:39,407 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2073 transitions. Word has length 223 [2020-10-13 06:23:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:39,408 INFO L479 AbstractCegarLoop]: Abstraction has 1602 states and 2073 transitions. [2020-10-13 06:23:39,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:23:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2073 transitions. [2020-10-13 06:23:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 06:23:39,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:39,415 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:39,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:23:39,416 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:39,416 INFO L82 PathProgramCache]: Analyzing trace with hash -408675170, now seen corresponding path program 1 times [2020-10-13 06:23:39,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:39,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132008480] [2020-10-13 06:23:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:44,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:44,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:23:44,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:44,625 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:23:44,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:23:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:44,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:44,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:44,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:44,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:23:44,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:23:44,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:44,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:44,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:44,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:23:44,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:23:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:44,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:44,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:23:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:23:44,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132008480] [2020-10-13 06:23:44,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:44,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:44,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640734408] [2020-10-13 06:23:44,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:44,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:44,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:44,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:44,891 INFO L87 Difference]: Start difference. First operand 1602 states and 2073 transitions. Second operand 7 states. [2020-10-13 06:23:45,032 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:46,981 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:48,183 INFO L93 Difference]: Finished difference Result 4440 states and 5927 transitions. [2020-10-13 06:23:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:48,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-13 06:23:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:48,210 INFO L225 Difference]: With dead ends: 4440 [2020-10-13 06:23:48,210 INFO L226 Difference]: Without dead ends: 2947 [2020-10-13 06:23:48,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-10-13 06:23:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2929. [2020-10-13 06:23:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2929 states. [2020-10-13 06:23:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3898 transitions. [2020-10-13 06:23:48,298 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3898 transitions. Word has length 236 [2020-10-13 06:23:48,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:48,298 INFO L479 AbstractCegarLoop]: Abstraction has 2929 states and 3898 transitions. [2020-10-13 06:23:48,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3898 transitions. [2020-10-13 06:23:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 06:23:48,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:48,308 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:48,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:23:48,308 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:48,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2147319233, now seen corresponding path program 1 times [2020-10-13 06:23:48,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:48,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735886353] [2020-10-13 06:23:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 06:23:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3861 [2020-10-13 06:23:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:23:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:23:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:52,392 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:23:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:23:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:52,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:23:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:52,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:23:52,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:23:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:23:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:52,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735886353] [2020-10-13 06:23:52,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:52,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:52,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599376201] [2020-10-13 06:23:52,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:52,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:52,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:52,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:52,754 INFO L87 Difference]: Start difference. First operand 2929 states and 3898 transitions. Second operand 7 states. [2020-10-13 06:23:53,086 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:23:53,886 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:56,883 INFO L93 Difference]: Finished difference Result 11054 states and 16256 transitions. [2020-10-13 06:23:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:56,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-13 06:23:56,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:56,942 INFO L225 Difference]: With dead ends: 11054 [2020-10-13 06:23:56,943 INFO L226 Difference]: Without dead ends: 8122 [2020-10-13 06:23:56,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8122 states. [2020-10-13 06:23:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8122 to 7795. [2020-10-13 06:23:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-10-13 06:23:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10543 transitions. [2020-10-13 06:23:57,238 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10543 transitions. Word has length 240 [2020-10-13 06:23:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:57,239 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10543 transitions. [2020-10-13 06:23:57,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10543 transitions. [2020-10-13 06:23:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-13 06:23:57,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:57,267 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:57,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:23:57,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1488424791, now seen corresponding path program 1 times [2020-10-13 06:23:57,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:57,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244840372] [2020-10-13 06:23:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:02,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 06:24:02,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:24:02,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 06:24:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:24:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:24:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:24:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:02,633 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:02,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:02,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:02,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:24:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:24:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:24:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:24:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:24:03,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 06:24:03,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:24:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:24:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:03,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:24:03,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:24:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:24:03,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244840372] [2020-10-13 06:24:03,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:03,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:03,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19060851] [2020-10-13 06:24:03,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:03,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:03,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:03,256 INFO L87 Difference]: Start difference. First operand 7795 states and 10543 transitions. Second operand 7 states. [2020-10-13 06:24:03,407 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:24:03,892 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:06,445 INFO L93 Difference]: Finished difference Result 18930 states and 26201 transitions. [2020-10-13 06:24:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:06,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-13 06:24:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:06,501 INFO L225 Difference]: With dead ends: 18930 [2020-10-13 06:24:06,501 INFO L226 Difference]: Without dead ends: 11208 [2020-10-13 06:24:06,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2020-10-13 06:24:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 10909. [2020-10-13 06:24:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10909 states. [2020-10-13 06:24:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 14138 transitions. [2020-10-13 06:24:06,867 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 14138 transitions. Word has length 247 [2020-10-13 06:24:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:06,868 INFO L479 AbstractCegarLoop]: Abstraction has 10909 states and 14138 transitions. [2020-10-13 06:24:06,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:06,868 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 14138 transitions. [2020-10-13 06:24:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 06:24:06,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:06,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:06,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:24:06,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:06,899 INFO L82 PathProgramCache]: Analyzing trace with hash -979995375, now seen corresponding path program 1 times [2020-10-13 06:24:06,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:06,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839166997] [2020-10-13 06:24:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:11,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:11,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 06:24:11,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:24:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:24:11,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:24:11,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:24:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:12,151 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:12,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:12,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:12,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:12,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:12,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:12,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:12,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:12,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:24:12,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:24:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:12,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:12,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:12,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:24:12,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:24:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 06:24:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:12,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:24:12,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:24:12,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:24:12,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839166997] [2020-10-13 06:24:12,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:12,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:12,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066773926] [2020-10-13 06:24:12,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:12,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:12,590 INFO L87 Difference]: Start difference. First operand 10909 states and 14138 transitions. Second operand 7 states. [2020-10-13 06:24:12,818 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:13,160 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:16,883 INFO L93 Difference]: Finished difference Result 29453 states and 39529 transitions. [2020-10-13 06:24:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:16,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-13 06:24:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:16,977 INFO L225 Difference]: With dead ends: 29453 [2020-10-13 06:24:16,978 INFO L226 Difference]: Without dead ends: 19079 [2020-10-13 06:24:17,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19079 states. [2020-10-13 06:24:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19079 to 19027. [2020-10-13 06:24:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19027 states. [2020-10-13 06:24:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19027 states to 19027 states and 23363 transitions. [2020-10-13 06:24:17,492 INFO L78 Accepts]: Start accepts. Automaton has 19027 states and 23363 transitions. Word has length 250 [2020-10-13 06:24:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:17,493 INFO L479 AbstractCegarLoop]: Abstraction has 19027 states and 23363 transitions. [2020-10-13 06:24:17,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19027 states and 23363 transitions. [2020-10-13 06:24:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 06:24:17,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:17,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:17,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:24:17,528 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2064746656, now seen corresponding path program 1 times [2020-10-13 06:24:17,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:17,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240357939] [2020-10-13 06:24:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 06:24:22,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:24:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 06:24:22,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 06:24:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:24:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,769 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:22,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:22,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:22,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:22,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:22,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:22,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:24:22,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:24:22,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:24:22,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:24:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 06:24:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:22,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:24:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:24:23,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240357939] [2020-10-13 06:24:23,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:23,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:23,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391409122] [2020-10-13 06:24:23,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:23,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:23,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:23,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:23,048 INFO L87 Difference]: Start difference. First operand 19027 states and 23363 transitions. Second operand 7 states. [2020-10-13 06:24:23,548 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:24,681 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:26,822 INFO L93 Difference]: Finished difference Result 37970 states and 55257 transitions. [2020-10-13 06:24:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:26,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-13 06:24:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:26,974 INFO L225 Difference]: With dead ends: 37970 [2020-10-13 06:24:26,974 INFO L226 Difference]: Without dead ends: 29102 [2020-10-13 06:24:27,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29102 states. [2020-10-13 06:24:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29102 to 26202. [2020-10-13 06:24:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26202 states. [2020-10-13 06:24:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26202 states to 26202 states and 32468 transitions. [2020-10-13 06:24:28,016 INFO L78 Accepts]: Start accepts. Automaton has 26202 states and 32468 transitions. Word has length 263 [2020-10-13 06:24:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:28,016 INFO L479 AbstractCegarLoop]: Abstraction has 26202 states and 32468 transitions. [2020-10-13 06:24:28,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 26202 states and 32468 transitions. [2020-10-13 06:24:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 06:24:28,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:28,076 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:28,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:24:28,076 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:28,077 INFO L82 PathProgramCache]: Analyzing trace with hash 488216109, now seen corresponding path program 1 times [2020-10-13 06:24:28,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:28,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000687209] [2020-10-13 06:24:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 06:24:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 06:24:33,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 06:24:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:24:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:33,342 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:33,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:33,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:24:33,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:33,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:24:33,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:24:33,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:24:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 06:24:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:24:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:24:33,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000687209] [2020-10-13 06:24:33,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:33,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:33,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547601736] [2020-10-13 06:24:33,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:33,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:33,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:33,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:33,595 INFO L87 Difference]: Start difference. First operand 26202 states and 32468 transitions. Second operand 7 states. [2020-10-13 06:24:33,734 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:35,366 INFO L93 Difference]: Finished difference Result 44683 states and 56104 transitions. [2020-10-13 06:24:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:24:35,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-13 06:24:35,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:35,445 INFO L225 Difference]: With dead ends: 44683 [2020-10-13 06:24:35,445 INFO L226 Difference]: Without dead ends: 26043 [2020-10-13 06:24:35,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:24:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26043 states. [2020-10-13 06:24:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26043 to 23855. [2020-10-13 06:24:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23855 states. [2020-10-13 06:24:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23855 states to 23855 states and 28633 transitions. [2020-10-13 06:24:35,972 INFO L78 Accepts]: Start accepts. Automaton has 23855 states and 28633 transitions. Word has length 264 [2020-10-13 06:24:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:35,973 INFO L479 AbstractCegarLoop]: Abstraction has 23855 states and 28633 transitions. [2020-10-13 06:24:35,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 23855 states and 28633 transitions. [2020-10-13 06:24:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 06:24:36,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:36,039 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:36,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:24:36,039 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2052620514, now seen corresponding path program 1 times [2020-10-13 06:24:36,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:36,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259472700] [2020-10-13 06:24:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 06:24:41,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:24:41,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:24:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:24:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:41,360 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:24:41,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:41,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 06:24:41,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:41,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:24:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:41,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:24:41,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:24:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:24:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:24:41,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:24:41,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:24:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 06:24:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:24:41,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:24:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 121 proven. 28 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 06:24:42,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259472700] [2020-10-13 06:24:42,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:42,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:42,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115899290] [2020-10-13 06:24:42,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:42,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:42,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:42,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:42,032 INFO L87 Difference]: Start difference. First operand 23855 states and 28633 transitions. Second operand 7 states. [2020-10-13 06:24:42,177 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:42,839 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:44,835 INFO L93 Difference]: Finished difference Result 50693 states and 61778 transitions. [2020-10-13 06:24:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:44,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-13 06:24:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:44,920 INFO L225 Difference]: With dead ends: 50693 [2020-10-13 06:24:44,920 INFO L226 Difference]: Without dead ends: 33560 [2020-10-13 06:24:45,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33560 states. [2020-10-13 06:24:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33560 to 33253. [2020-10-13 06:24:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33253 states. [2020-10-13 06:24:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33253 states to 33253 states and 39584 transitions. [2020-10-13 06:24:45,763 INFO L78 Accepts]: Start accepts. Automaton has 33253 states and 39584 transitions. Word has length 300 [2020-10-13 06:24:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:45,764 INFO L479 AbstractCegarLoop]: Abstraction has 33253 states and 39584 transitions. [2020-10-13 06:24:45,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 33253 states and 39584 transitions. [2020-10-13 06:24:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 06:24:45,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:45,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:45,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:24:45,804 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash -444960957, now seen corresponding path program 1 times [2020-10-13 06:24:45,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:45,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790905323] [2020-10-13 06:24:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:49,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3790 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:24:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:49,876 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:49,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:24:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:24:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:50,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:50,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:50,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:24:50,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:24:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:24:50,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790905323] [2020-10-13 06:24:50,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:50,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:50,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937362783] [2020-10-13 06:24:50,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:50,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:50,282 INFO L87 Difference]: Start difference. First operand 33253 states and 39584 transitions. Second operand 7 states. [2020-10-13 06:24:50,424 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:51,285 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:53,709 INFO L93 Difference]: Finished difference Result 83387 states and 102178 transitions. [2020-10-13 06:24:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:53,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-13 06:24:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:53,811 INFO L225 Difference]: With dead ends: 83387 [2020-10-13 06:24:53,811 INFO L226 Difference]: Without dead ends: 50679 [2020-10-13 06:24:53,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:53,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50679 states. [2020-10-13 06:24:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50679 to 50401. [2020-10-13 06:24:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50401 states. [2020-10-13 06:24:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50401 states to 50401 states and 60200 transitions. [2020-10-13 06:24:54,738 INFO L78 Accepts]: Start accepts. Automaton has 50401 states and 60200 transitions. Word has length 310 [2020-10-13 06:24:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:54,738 INFO L479 AbstractCegarLoop]: Abstraction has 50401 states and 60200 transitions. [2020-10-13 06:24:54,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 50401 states and 60200 transitions. [2020-10-13 06:24:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-13 06:24:54,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:54,784 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1] [2020-10-13 06:24:54,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:24:54,784 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:54,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:54,784 INFO L82 PathProgramCache]: Analyzing trace with hash 26541672, now seen corresponding path program 1 times [2020-10-13 06:24:54,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:54,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700242750] [2020-10-13 06:24:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:54,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:58,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:58,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-13 06:24:58,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:24:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3377 [2020-10-13 06:24:58,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:24:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:58,439 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:58,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:24:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:24:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:58,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:24:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:24:58,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700242750] [2020-10-13 06:24:58,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:58,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:58,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851381236] [2020-10-13 06:24:58,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:58,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:58,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:58,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:58,856 INFO L87 Difference]: Start difference. First operand 50401 states and 60200 transitions. Second operand 7 states. [2020-10-13 06:24:59,179 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:59,882 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:03,411 INFO L93 Difference]: Finished difference Result 132823 states and 160518 transitions. [2020-10-13 06:25:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:25:03,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-13 06:25:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:03,612 INFO L225 Difference]: With dead ends: 132823 [2020-10-13 06:25:03,612 INFO L226 Difference]: Without dead ends: 90380 [2020-10-13 06:25:03,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90380 states. [2020-10-13 06:25:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90380 to 90158. [2020-10-13 06:25:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90158 states. [2020-10-13 06:25:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90158 states to 90158 states and 106728 transitions. [2020-10-13 06:25:04,995 INFO L78 Accepts]: Start accepts. Automaton has 90158 states and 106728 transitions. Word has length 315 [2020-10-13 06:25:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:04,995 INFO L479 AbstractCegarLoop]: Abstraction has 90158 states and 106728 transitions. [2020-10-13 06:25:04,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:25:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 90158 states and 106728 transitions. [2020-10-13 06:25:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 06:25:05,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:05,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:05,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:25:05,039 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash -511201361, now seen corresponding path program 1 times [2020-10-13 06:25:05,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:05,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711990745] [2020-10-13 06:25:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 06:25:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:25:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 06:25:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 06:25:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:10,313 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:10,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:25:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 06:25:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:25:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:25:10,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:10,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:25:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 06:25:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:25:10,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711990745] [2020-10-13 06:25:10,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:10,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:10,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131650661] [2020-10-13 06:25:10,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:10,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:10,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:10,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:10,627 INFO L87 Difference]: Start difference. First operand 90158 states and 106728 transitions. Second operand 5 states. [2020-10-13 06:25:10,767 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:12,535 INFO L93 Difference]: Finished difference Result 144581 states and 171278 transitions. [2020-10-13 06:25:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:12,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-13 06:25:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:12,726 INFO L225 Difference]: With dead ends: 144581 [2020-10-13 06:25:12,726 INFO L226 Difference]: Without dead ends: 90198 [2020-10-13 06:25:13,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90198 states. [2020-10-13 06:25:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90198 to 90146. [2020-10-13 06:25:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90146 states. [2020-10-13 06:25:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90146 states to 90146 states and 106677 transitions. [2020-10-13 06:25:14,634 INFO L78 Accepts]: Start accepts. Automaton has 90146 states and 106677 transitions. Word has length 325 [2020-10-13 06:25:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:14,635 INFO L479 AbstractCegarLoop]: Abstraction has 90146 states and 106677 transitions. [2020-10-13 06:25:14,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:25:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 90146 states and 106677 transitions. [2020-10-13 06:25:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 06:25:14,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:14,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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] [2020-10-13 06:25:14,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:25:14,723 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:14,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:14,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1576355270, now seen corresponding path program 1 times [2020-10-13 06:25:14,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:14,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996915293] [2020-10-13 06:25:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:15,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:19,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 06:25:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:25:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:25:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 06:25:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:20,265 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:20,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:20,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:25:20,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:20,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:20,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:20,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:25:20,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:25:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:20,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:20,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:25:20,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 06:25:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:25:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:25:20,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996915293] [2020-10-13 06:25:20,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:20,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:20,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409721831] [2020-10-13 06:25:20,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:20,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:20,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:20,696 INFO L87 Difference]: Start difference. First operand 90146 states and 106677 transitions. Second operand 5 states. [2020-10-13 06:25:21,255 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:23,550 INFO L93 Difference]: Finished difference Result 168717 states and 201634 transitions. [2020-10-13 06:25:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:23,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 06:25:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:23,743 INFO L225 Difference]: With dead ends: 168717 [2020-10-13 06:25:23,743 INFO L226 Difference]: Without dead ends: 88287 [2020-10-13 06:25:23,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88287 states. [2020-10-13 06:25:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88287 to 88225. [2020-10-13 06:25:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88225 states. [2020-10-13 06:25:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88225 states to 88225 states and 106238 transitions. [2020-10-13 06:25:27,519 INFO L78 Accepts]: Start accepts. Automaton has 88225 states and 106238 transitions. Word has length 326 [2020-10-13 06:25:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:27,520 INFO L479 AbstractCegarLoop]: Abstraction has 88225 states and 106238 transitions. [2020-10-13 06:25:27,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:25:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 88225 states and 106238 transitions. [2020-10-13 06:25:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-13 06:25:27,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:27,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:27,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:25:27,591 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:27,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1876084306, now seen corresponding path program 1 times [2020-10-13 06:25:27,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:27,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586756543] [2020-10-13 06:25:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:32,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:32,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 06:25:32,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:25:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 06:25:32,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:25:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:25:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:32,854 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:32,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:32,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:32,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:25:32,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:33,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:25:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 06:25:33,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:25:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:25:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:33,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:25:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:25:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 06:25:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:33,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:33,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 155 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 06:25:33,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586756543] [2020-10-13 06:25:33,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:33,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:25:33,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424706331] [2020-10-13 06:25:33,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:25:33,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:33,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:25:33,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:25:33,260 INFO L87 Difference]: Start difference. First operand 88225 states and 106238 transitions. Second operand 7 states. [2020-10-13 06:25:33,408 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:25:34,414 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:25:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:37,066 INFO L93 Difference]: Finished difference Result 216303 states and 263517 transitions. [2020-10-13 06:25:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:25:37,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-13 06:25:37,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:37,332 INFO L225 Difference]: With dead ends: 216303 [2020-10-13 06:25:37,332 INFO L226 Difference]: Without dead ends: 128619 [2020-10-13 06:25:37,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128619 states. [2020-10-13 06:25:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128619 to 127728. [2020-10-13 06:25:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127728 states. [2020-10-13 06:25:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127728 states to 127728 states and 149982 transitions. [2020-10-13 06:25:38,898 INFO L78 Accepts]: Start accepts. Automaton has 127728 states and 149982 transitions. Word has length 344 [2020-10-13 06:25:38,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:38,898 INFO L479 AbstractCegarLoop]: Abstraction has 127728 states and 149982 transitions. [2020-10-13 06:25:38,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:25:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 127728 states and 149982 transitions. [2020-10-13 06:25:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-13 06:25:38,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:38,982 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:38,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:25:38,982 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:38,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2117989794, now seen corresponding path program 1 times [2020-10-13 06:25:38,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:38,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969723044] [2020-10-13 06:25:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:25:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:46,454 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:46,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:25:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:46,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:25:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:25:46,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:25:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:25:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 06:25:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:46,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:46,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:25:46,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:25:46,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:25:46,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 06:25:46,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969723044] [2020-10-13 06:25:46,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:46,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:25:46,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163261165] [2020-10-13 06:25:46,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:25:46,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:46,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:25:46,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:25:46,842 INFO L87 Difference]: Start difference. First operand 127728 states and 149982 transitions. Second operand 8 states. [2020-10-13 06:25:47,053 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:48,879 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:49,094 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:51,498 INFO L93 Difference]: Finished difference Result 273280 states and 332953 transitions. [2020-10-13 06:25:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:25:51,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-13 06:25:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:51,869 INFO L225 Difference]: With dead ends: 273280 [2020-10-13 06:25:51,869 INFO L226 Difference]: Without dead ends: 145663 [2020-10-13 06:25:52,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:25:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145663 states. [2020-10-13 06:25:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145663 to 140606. [2020-10-13 06:25:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140606 states. [2020-10-13 06:25:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140606 states to 140606 states and 166503 transitions. [2020-10-13 06:25:54,269 INFO L78 Accepts]: Start accepts. Automaton has 140606 states and 166503 transitions. Word has length 364 [2020-10-13 06:25:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:54,269 INFO L479 AbstractCegarLoop]: Abstraction has 140606 states and 166503 transitions. [2020-10-13 06:25:54,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:25:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 140606 states and 166503 transitions. [2020-10-13 06:25:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-13 06:25:54,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:54,348 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, 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, 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] [2020-10-13 06:25:54,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:25:54,349 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:54,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:54,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1243990824, now seen corresponding path program 1 times [2020-10-13 06:25:54,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:54,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46546536] [2020-10-13 06:25:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4619 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 06:25:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:59,217 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:59,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:59,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:59,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:25:59,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:25:59,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:25:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:25:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking...