/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:15:17,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:15:17,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:15:17,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:15:17,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:15:17,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:15:17,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:15:17,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:15:17,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:15:17,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:15:17,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:15:17,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:15:17,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:15:17,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:15:17,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:15:17,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:15:17,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:15:17,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:15:17,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:15:17,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:15:17,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:15:17,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:15:17,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:15:17,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:15:17,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:15:17,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:15:17,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:15:17,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:15:17,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:15:17,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:15:17,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:15:17,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:15:17,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:15:17,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:15:17,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:15:17,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:15:17,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:15:17,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:15:17,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:15:17,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:15:17,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:15:17,633 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 06:15:17,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:15:17,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:15:17,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:15:17,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:15:17,675 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:15:17,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:15:17,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:15:17,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:15:17,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:15:17,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:15:17,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:15:17,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:15:17,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:15:17,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:15:17,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:15:17,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:15:17,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:15:17,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:15:17,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:15:17,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:15:17,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:15:17,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:15:17,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:15:17,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:15:17,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:15:17,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:15:17,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:15:17,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:15:17,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:15:17,684 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 06:15:17,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:15:17,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:15:17,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:15:17,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:15:17,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:15:17,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-13 06:15:18,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c620f83e4/b2aa07c32ba048a9b1fcc0970afc1d5b/FLAG0ee301265 [2020-10-13 06:15:18,615 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:15:18,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-13 06:15:18,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c620f83e4/b2aa07c32ba048a9b1fcc0970afc1d5b/FLAG0ee301265 [2020-10-13 06:15:18,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c620f83e4/b2aa07c32ba048a9b1fcc0970afc1d5b [2020-10-13 06:15:18,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:15:18,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:15:18,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:15:18,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:15:18,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:15:18,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:15:18" (1/1) ... [2020-10-13 06:15:18,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:18, skipping insertion in model container [2020-10-13 06:15:18,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:15:18" (1/1) ... [2020-10-13 06:15:18,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:15:18,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:15:19,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:15:19,910 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:15:20,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:15:20,392 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:15:20,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20 WrapperNode [2020-10-13 06:15:20,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:15:20,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:15:20,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:15:20,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:15:20,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (1/1) ... [2020-10-13 06:15:20,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:15:20,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:15:20,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:15:20,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:15:20,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (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 06:15:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:15:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:15:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:15:20,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:15:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:15:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:15:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:15:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:15:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:15:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:15:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:15:22,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:15:22,537 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:15:22,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:15:22 BoogieIcfgContainer [2020-10-13 06:15:22,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:15:22,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:15:22,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:15:22,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:15:22,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:15:18" (1/3) ... [2020-10-13 06:15:22,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d64098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:15:22, skipping insertion in model container [2020-10-13 06:15:22,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:20" (2/3) ... [2020-10-13 06:15:22,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d64098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:15:22, skipping insertion in model container [2020-10-13 06:15:22,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:15:22" (3/3) ... [2020-10-13 06:15:22,552 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2020-10-13 06:15:22,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:15:22,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:15:22,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:15:22,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:15:22,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:15:22,614 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:15:22,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:15:22,614 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:15:22,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:15:22,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:15:22,615 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:15:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:15:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 06:15:22,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:22,661 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] [2020-10-13 06:15:22,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:22,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1944252984, now seen corresponding path program 1 times [2020-10-13 06:15:22,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:22,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900807770] [2020-10-13 06:15:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:26,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:26,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 06:15:26,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3245 [2020-10-13 06:15:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:15:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:15:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:15:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:15:27,664 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:15:27,866 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-13 06:15:28,116 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-13 06:15:28,276 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-13 06:15:28,408 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-13 06:15:28,699 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:15:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:15:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:29,197 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 06:15:29,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900807770] [2020-10-13 06:15:29,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:15:29,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:15:29,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003945926] [2020-10-13 06:15:29,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:15:29,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:29,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:15:29,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:15:29,219 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:15:29,551 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:15:30,213 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:15:30,863 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:15:31,580 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-13 06:15:32,699 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-13 06:15:33,959 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 192 [2020-10-13 06:15:35,339 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-10-13 06:15:38,281 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 186 [2020-10-13 06:15:39,151 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 182 [2020-10-13 06:15:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:41,715 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:15:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:15:41,717 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 161 [2020-10-13 06:15:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:41,734 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:15:41,735 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:15:41,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:15:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:15:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:15:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:15:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:15:41,819 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 161 [2020-10-13 06:15:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:41,820 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:15:41,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:15:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:15:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 06:15:41,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:41,826 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] [2020-10-13 06:15:41,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:15:41,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:41,828 INFO L82 PathProgramCache]: Analyzing trace with hash 901827759, now seen corresponding path program 1 times [2020-10-13 06:15:41,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:41,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883359159] [2020-10-13 06:15:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:45,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 06:15:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3307 [2020-10-13 06:15:45,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:15:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 06:15:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:45,516 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:45,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:45,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:15:45,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:45,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:45,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:45,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:45,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:15:45,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:15:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:45,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883359159] [2020-10-13 06:15:45,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:45,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:45,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486092911] [2020-10-13 06:15:45,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:45,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:45,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:45,682 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:15:45,814 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:47,996 INFO L93 Difference]: Finished difference Result 818 states and 1276 transitions. [2020-10-13 06:15:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:47,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 06:15:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:48,004 INFO L225 Difference]: With dead ends: 818 [2020-10-13 06:15:48,004 INFO L226 Difference]: Without dead ends: 575 [2020-10-13 06:15:48,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:15:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-13 06:15:48,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2020-10-13 06:15:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-13 06:15:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 774 transitions. [2020-10-13 06:15:48,046 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 774 transitions. Word has length 172 [2020-10-13 06:15:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:48,047 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 774 transitions. [2020-10-13 06:15:48,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 774 transitions. [2020-10-13 06:15:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 06:15:48,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:48,054 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] [2020-10-13 06:15:48,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:15:48,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash -568787485, now seen corresponding path program 1 times [2020-10-13 06:15:48,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:48,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434993555] [2020-10-13 06:15:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:49,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 06:15:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-10-13 06:15:49,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 06:15:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:15:50,244 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:50,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:50,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:50,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:50,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:15:50,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:50,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:50,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:15:50,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:50,578 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 06:15:50,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434993555] [2020-10-13 06:15:50,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:50,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:50,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105072383] [2020-10-13 06:15:50,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:50,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:50,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:50,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:50,584 INFO L87 Difference]: Start difference. First operand 575 states and 774 transitions. Second operand 5 states. [2020-10-13 06:15:50,954 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:53,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:53,368 INFO L93 Difference]: Finished difference Result 1459 states and 2044 transitions. [2020-10-13 06:15:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:53,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-13 06:15:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:53,377 INFO L225 Difference]: With dead ends: 1459 [2020-10-13 06:15:53,377 INFO L226 Difference]: Without dead ends: 1005 [2020-10-13 06:15:53,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 06:15:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-10-13 06:15:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1000. [2020-10-13 06:15:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-13 06:15:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1325 transitions. [2020-10-13 06:15:53,428 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1325 transitions. Word has length 182 [2020-10-13 06:15:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:53,429 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1325 transitions. [2020-10-13 06:15:53,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1325 transitions. [2020-10-13 06:15:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-13 06:15:53,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:53,435 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:15:53,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:15:53,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash -817779860, now seen corresponding path program 1 times [2020-10-13 06:15:53,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:53,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861386186] [2020-10-13 06:15:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 06:15:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1850 [2020-10-13 06:15:55,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:15:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:55,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:55,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:55,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:15:55,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:15:55,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 06:15:55,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:15:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:15:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:55,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861386186] [2020-10-13 06:15:55,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:55,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:15:55,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973564280] [2020-10-13 06:15:55,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:15:55,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:55,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:15:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:15:55,835 INFO L87 Difference]: Start difference. First operand 1000 states and 1325 transitions. Second operand 8 states. [2020-10-13 06:15:55,990 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:56,248 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:56,757 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:59,799 INFO L93 Difference]: Finished difference Result 2334 states and 3268 transitions. [2020-10-13 06:15:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:15:59,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-10-13 06:15:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:59,810 INFO L225 Difference]: With dead ends: 2334 [2020-10-13 06:15:59,810 INFO L226 Difference]: Without dead ends: 1455 [2020-10-13 06:15:59,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:15:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-13 06:15:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1441. [2020-10-13 06:15:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2020-10-13 06:15:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1872 transitions. [2020-10-13 06:15:59,864 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1872 transitions. Word has length 192 [2020-10-13 06:15:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:59,864 INFO L479 AbstractCegarLoop]: Abstraction has 1441 states and 1872 transitions. [2020-10-13 06:15:59,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:15:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1872 transitions. [2020-10-13 06:15:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-13 06:15:59,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:59,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:59,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:15:59,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:59,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:59,871 INFO L82 PathProgramCache]: Analyzing trace with hash 800082475, now seen corresponding path program 1 times [2020-10-13 06:15:59,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:59,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638643513] [2020-10-13 06:15:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:00,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 06:16:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2585 [2020-10-13 06:16:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:16:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:16:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:16:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:02,693 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:02,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:02,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:02,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:16:02,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:16:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:02,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:02,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:02,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 06:16:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:16:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:16:03,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638643513] [2020-10-13 06:16:03,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:16:03,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:16:03,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910660055] [2020-10-13 06:16:03,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:03,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:03,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:03,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:03,238 INFO L87 Difference]: Start difference. First operand 1441 states and 1872 transitions. Second operand 7 states. [2020-10-13 06:16:03,363 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:05,557 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:06,903 INFO L93 Difference]: Finished difference Result 4119 states and 5677 transitions. [2020-10-13 06:16:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:16:06,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-13 06:16:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:06,926 INFO L225 Difference]: With dead ends: 4119 [2020-10-13 06:16:06,926 INFO L226 Difference]: Without dead ends: 2799 [2020-10-13 06:16:06,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2020-10-13 06:16:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2742. [2020-10-13 06:16:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2020-10-13 06:16:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 3661 transitions. [2020-10-13 06:16:07,041 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 3661 transitions. Word has length 193 [2020-10-13 06:16:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:07,042 INFO L479 AbstractCegarLoop]: Abstraction has 2742 states and 3661 transitions. [2020-10-13 06:16:07,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 3661 transitions. [2020-10-13 06:16:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 06:16:07,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:07,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:07,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:16:07,051 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash 948350226, now seen corresponding path program 1 times [2020-10-13 06:16:07,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:07,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012889779] [2020-10-13 06:16:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:12,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:12,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 06:16:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:16:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:16:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:16:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:16:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:16:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:12,306 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:12,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:12,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:12,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:16:12,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:16:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:12,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:16:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:16:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:16:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:16:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:12,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:12,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:12,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 06:16:12,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:16:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:16:12,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012889779] [2020-10-13 06:16:12,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:12,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:16:12,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423048804] [2020-10-13 06:16:12,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:12,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:12,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:12,622 INFO L87 Difference]: Start difference. First operand 2742 states and 3661 transitions. Second operand 7 states. [2020-10-13 06:16:12,753 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:13,279 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:15,434 INFO L93 Difference]: Finished difference Result 6261 states and 8342 transitions. [2020-10-13 06:16:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:15,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-13 06:16:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:15,459 INFO L225 Difference]: With dead ends: 6261 [2020-10-13 06:16:15,459 INFO L226 Difference]: Without dead ends: 3640 [2020-10-13 06:16:15,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2020-10-13 06:16:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3605. [2020-10-13 06:16:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-10-13 06:16:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 4685 transitions. [2020-10-13 06:16:15,568 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 4685 transitions. Word has length 204 [2020-10-13 06:16:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:15,569 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 4685 transitions. [2020-10-13 06:16:15,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 4685 transitions. [2020-10-13 06:16:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 06:16:15,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:15,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:16:15,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:16:15,580 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash -43140083, now seen corresponding path program 1 times [2020-10-13 06:16:15,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:15,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739026749] [2020-10-13 06:16:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3542 [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:16:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:19,326 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:19,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:19,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:19,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:19,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:16:19,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:19,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:16:19,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:16:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:16:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:19,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739026749] [2020-10-13 06:16:19,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:19,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:19,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261622054] [2020-10-13 06:16:19,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:19,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:19,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:19,686 INFO L87 Difference]: Start difference. First operand 3605 states and 4685 transitions. Second operand 7 states. [2020-10-13 06:16:19,832 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:21,380 INFO L93 Difference]: Finished difference Result 7056 states and 9272 transitions. [2020-10-13 06:16:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:16:21,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-13 06:16:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:21,396 INFO L225 Difference]: With dead ends: 7056 [2020-10-13 06:16:21,396 INFO L226 Difference]: Without dead ends: 3572 [2020-10-13 06:16:21,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:16:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2020-10-13 06:16:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 3570. [2020-10-13 06:16:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3570 states. [2020-10-13 06:16:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4490 transitions. [2020-10-13 06:16:21,489 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4490 transitions. Word has length 206 [2020-10-13 06:16:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:21,489 INFO L479 AbstractCegarLoop]: Abstraction has 3570 states and 4490 transitions. [2020-10-13 06:16:21,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4490 transitions. [2020-10-13 06:16:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 06:16:21,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:21,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:21,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:16:21,499 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash 965440077, now seen corresponding path program 1 times [2020-10-13 06:16:21,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:21,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140565500] [2020-10-13 06:16:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:21,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 06:16:24,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-10-13 06:16:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:16:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:16:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:25,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:16:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:16:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:25,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:25,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:25,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 06:16:25,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:16:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:25,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140565500] [2020-10-13 06:16:25,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:25,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:25,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723643858] [2020-10-13 06:16:25,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:25,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:25,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:25,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:25,217 INFO L87 Difference]: Start difference. First operand 3570 states and 4490 transitions. Second operand 7 states. [2020-10-13 06:16:25,355 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:26,300 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:28,274 INFO L93 Difference]: Finished difference Result 10489 states and 13848 transitions. [2020-10-13 06:16:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:28,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-13 06:16:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:28,307 INFO L225 Difference]: With dead ends: 10489 [2020-10-13 06:16:28,308 INFO L226 Difference]: Without dead ends: 7040 [2020-10-13 06:16:28,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2020-10-13 06:16:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 6980. [2020-10-13 06:16:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6980 states. [2020-10-13 06:16:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 8759 transitions. [2020-10-13 06:16:28,511 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 8759 transitions. Word has length 230 [2020-10-13 06:16:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:28,512 INFO L479 AbstractCegarLoop]: Abstraction has 6980 states and 8759 transitions. [2020-10-13 06:16:28,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 8759 transitions. [2020-10-13 06:16:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 06:16:28,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:28,528 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:28,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:16:28,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:28,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1963063937, now seen corresponding path program 1 times [2020-10-13 06:16:28,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:28,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936097792] [2020-10-13 06:16:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:30,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 06:16:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-13 06:16:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:16:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:30,337 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:16:30,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:30,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936097792] [2020-10-13 06:16:30,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:30,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:30,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755547983] [2020-10-13 06:16:30,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:30,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:30,710 INFO L87 Difference]: Start difference. First operand 6980 states and 8759 transitions. Second operand 7 states. [2020-10-13 06:16:31,017 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:32,067 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:34,955 INFO L93 Difference]: Finished difference Result 18848 states and 24312 transitions. [2020-10-13 06:16:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:34,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-13 06:16:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:35,014 INFO L225 Difference]: With dead ends: 18848 [2020-10-13 06:16:35,014 INFO L226 Difference]: Without dead ends: 11989 [2020-10-13 06:16:35,032 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 06:16:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2020-10-13 06:16:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11558. [2020-10-13 06:16:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11558 states. [2020-10-13 06:16:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11558 states to 11558 states and 14339 transitions. [2020-10-13 06:16:35,329 INFO L78 Accepts]: Start accepts. Automaton has 11558 states and 14339 transitions. Word has length 240 [2020-10-13 06:16:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:35,330 INFO L479 AbstractCegarLoop]: Abstraction has 11558 states and 14339 transitions. [2020-10-13 06:16:35,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11558 states and 14339 transitions. [2020-10-13 06:16:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-13 06:16:35,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:35,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:35,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:16:35,363 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:35,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:35,364 INFO L82 PathProgramCache]: Analyzing trace with hash -664689635, now seen corresponding path program 1 times [2020-10-13 06:16:35,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:35,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662550651] [2020-10-13 06:16:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 06:16:38,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-10-13 06:16:38,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:16:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:16:38,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,216 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:38,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:16:38,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:16:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:16:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:16:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:16:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:38,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662550651] [2020-10-13 06:16:38,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:38,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:38,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442744579] [2020-10-13 06:16:38,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:38,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:38,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:38,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:38,694 INFO L87 Difference]: Start difference. First operand 11558 states and 14339 transitions. Second operand 7 states. [2020-10-13 06:16:39,206 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:40,320 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:16:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:41,759 INFO L93 Difference]: Finished difference Result 29714 states and 38359 transitions. [2020-10-13 06:16:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:41,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-13 06:16:41,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:41,825 INFO L225 Difference]: With dead ends: 29714 [2020-10-13 06:16:41,825 INFO L226 Difference]: Without dead ends: 18536 [2020-10-13 06:16:41,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18536 states. [2020-10-13 06:16:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18536 to 18369. [2020-10-13 06:16:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18369 states. [2020-10-13 06:16:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18369 states to 18369 states and 22482 transitions. [2020-10-13 06:16:42,345 INFO L78 Accepts]: Start accepts. Automaton has 18369 states and 22482 transitions. Word has length 254 [2020-10-13 06:16:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:42,346 INFO L479 AbstractCegarLoop]: Abstraction has 18369 states and 22482 transitions. [2020-10-13 06:16:42,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18369 states and 22482 transitions. [2020-10-13 06:16:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-13 06:16:42,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:42,380 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:42,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:16:42,380 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:42,381 INFO L82 PathProgramCache]: Analyzing trace with hash 262942125, now seen corresponding path program 1 times [2020-10-13 06:16:42,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:42,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968185184] [2020-10-13 06:16:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:44,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2076 [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:16:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:44,687 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:44,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:44,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:44,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:44,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:16:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:44,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:44,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:16:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:45,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968185184] [2020-10-13 06:16:45,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:45,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:45,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173436436] [2020-10-13 06:16:45,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:45,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:45,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:45,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:45,214 INFO L87 Difference]: Start difference. First operand 18369 states and 22482 transitions. Second operand 7 states. [2020-10-13 06:16:45,577 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:46,665 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:16:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:48,746 INFO L93 Difference]: Finished difference Result 39431 states and 51616 transitions. [2020-10-13 06:16:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:48,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-13 06:16:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:48,812 INFO L225 Difference]: With dead ends: 39431 [2020-10-13 06:16:48,812 INFO L226 Difference]: Without dead ends: 21183 [2020-10-13 06:16:48,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 06:16:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21183 states. [2020-10-13 06:16:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21183 to 19214. [2020-10-13 06:16:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19214 states. [2020-10-13 06:16:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19214 states to 19214 states and 22756 transitions. [2020-10-13 06:16:49,429 INFO L78 Accepts]: Start accepts. Automaton has 19214 states and 22756 transitions. Word has length 259 [2020-10-13 06:16:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:49,430 INFO L479 AbstractCegarLoop]: Abstraction has 19214 states and 22756 transitions. [2020-10-13 06:16:49,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 19214 states and 22756 transitions. [2020-10-13 06:16:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 06:16:49,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:49,468 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:49,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:16:49,469 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1659076916, now seen corresponding path program 1 times [2020-10-13 06:16:49,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:49,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36587176] [2020-10-13 06:16:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:54,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:54,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 06:16:54,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:16:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:16:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:16:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:16:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:54,672 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:16:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:54,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:16:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:16:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:54,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:54,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:16:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:16:54,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:16:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:16:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:54,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:16:54,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:16:54,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:54,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:16:55,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36587176] [2020-10-13 06:16:55,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:55,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:55,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726680949] [2020-10-13 06:16:55,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:55,062 INFO L87 Difference]: Start difference. First operand 19214 states and 22756 transitions. Second operand 7 states. [2020-10-13 06:16:55,231 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:56,161 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:58,245 INFO L93 Difference]: Finished difference Result 43898 states and 53579 transitions. [2020-10-13 06:16:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:58,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-13 06:16:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:58,301 INFO L225 Difference]: With dead ends: 43898 [2020-10-13 06:16:58,301 INFO L226 Difference]: Without dead ends: 25046 [2020-10-13 06:16:58,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 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 06:16:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25046 states. [2020-10-13 06:16:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25046 to 24891. [2020-10-13 06:16:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24891 states. [2020-10-13 06:16:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24891 states to 24891 states and 29538 transitions. [2020-10-13 06:16:58,809 INFO L78 Accepts]: Start accepts. Automaton has 24891 states and 29538 transitions. Word has length 264 [2020-10-13 06:16:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:58,809 INFO L479 AbstractCegarLoop]: Abstraction has 24891 states and 29538 transitions. [2020-10-13 06:16:58,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 24891 states and 29538 transitions. [2020-10-13 06:16:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 06:16:58,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:58,848 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 06:16:58,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:16:58,848 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1791169503, now seen corresponding path program 1 times [2020-10-13 06:16:58,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:58,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274490412] [2020-10-13 06:16:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:59,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:03,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:17:03,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:04,056 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:04,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:04,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:04,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:04,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:17:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:17:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:17:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:17:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:17:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 06:17:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:17:04,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:17:04,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:17:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:04,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 06:17:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:17:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:17:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:17:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 149 proven. 28 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 06:17:04,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274490412] [2020-10-13 06:17:04,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:04,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:04,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913264753] [2020-10-13 06:17:04,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:04,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:04,464 INFO L87 Difference]: Start difference. First operand 24891 states and 29538 transitions. Second operand 7 states. [2020-10-13 06:17:04,772 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:17:05,610 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:17:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:07,880 INFO L93 Difference]: Finished difference Result 53649 states and 66130 transitions. [2020-10-13 06:17:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:07,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-13 06:17:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:07,943 INFO L225 Difference]: With dead ends: 53649 [2020-10-13 06:17:07,944 INFO L226 Difference]: Without dead ends: 26938 [2020-10-13 06:17:08,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26938 states. [2020-10-13 06:17:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26938 to 23719. [2020-10-13 06:17:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23719 states. [2020-10-13 06:17:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23719 states to 23719 states and 26980 transitions. [2020-10-13 06:17:08,647 INFO L78 Accepts]: Start accepts. Automaton has 23719 states and 26980 transitions. Word has length 301 [2020-10-13 06:17:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:08,648 INFO L479 AbstractCegarLoop]: Abstraction has 23719 states and 26980 transitions. [2020-10-13 06:17:08,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 23719 states and 26980 transitions. [2020-10-13 06:17:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 06:17:08,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:08,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:08,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:17:08,670 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:08,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1786795991, now seen corresponding path program 1 times [2020-10-13 06:17:08,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:08,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144080350] [2020-10-13 06:17:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 06:17:12,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:17:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3376 [2020-10-13 06:17:12,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:17:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 06:17:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:12,342 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:12,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:12,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:12,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:17:12,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:17:12,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:17:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:12,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:17:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:17:12,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:12,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 06:17:12,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 06:17:12,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:17:12,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144080350] [2020-10-13 06:17:12,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:12,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:12,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393639935] [2020-10-13 06:17:12,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:12,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:12,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:12,846 INFO L87 Difference]: Start difference. First operand 23719 states and 26980 transitions. Second operand 7 states. [2020-10-13 06:17:12,994 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:17:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:15,671 INFO L93 Difference]: Finished difference Result 51067 states and 59062 transitions. [2020-10-13 06:17:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:17:15,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-13 06:17:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:15,729 INFO L225 Difference]: With dead ends: 51067 [2020-10-13 06:17:15,729 INFO L226 Difference]: Without dead ends: 27683 [2020-10-13 06:17:15,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:17:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27683 states. [2020-10-13 06:17:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27683 to 27290. [2020-10-13 06:17:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27290 states. [2020-10-13 06:17:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27290 states to 27290 states and 31322 transitions. [2020-10-13 06:17:17,438 INFO L78 Accepts]: Start accepts. Automaton has 27290 states and 31322 transitions. Word has length 308 [2020-10-13 06:17:17,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:17,438 INFO L479 AbstractCegarLoop]: Abstraction has 27290 states and 31322 transitions. [2020-10-13 06:17:17,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 27290 states and 31322 transitions. [2020-10-13 06:17:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 06:17:17,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:17,463 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:17,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:17:17,463 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:17,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:17,464 INFO L82 PathProgramCache]: Analyzing trace with hash -244311175, now seen corresponding path program 1 times [2020-10-13 06:17:17,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:17,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159509733] [2020-10-13 06:17:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 06:17:22,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:17:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 06:17:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 06:17:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:22,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:22,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:17:22,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:17:22,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 06:17:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:17:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:23,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 06:17:23,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:17:23,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 06:17:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:17:23,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159509733] [2020-10-13 06:17:23,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:23,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:23,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546223550] [2020-10-13 06:17:23,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:23,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:23,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:23,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:23,267 INFO L87 Difference]: Start difference. First operand 27290 states and 31322 transitions. Second operand 7 states. [2020-10-13 06:17:23,634 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:24,615 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:17:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:26,119 INFO L93 Difference]: Finished difference Result 55443 states and 64238 transitions. [2020-10-13 06:17:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:26,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-13 06:17:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:26,167 INFO L225 Difference]: With dead ends: 55443 [2020-10-13 06:17:26,168 INFO L226 Difference]: Without dead ends: 28471 [2020-10-13 06:17:26,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 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 06:17:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28471 states. [2020-10-13 06:17:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28471 to 27891. [2020-10-13 06:17:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27891 states. [2020-10-13 06:17:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27891 states to 27891 states and 31607 transitions. [2020-10-13 06:17:26,656 INFO L78 Accepts]: Start accepts. Automaton has 27891 states and 31607 transitions. Word has length 310 [2020-10-13 06:17:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:26,657 INFO L479 AbstractCegarLoop]: Abstraction has 27891 states and 31607 transitions. [2020-10-13 06:17:26,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27891 states and 31607 transitions. [2020-10-13 06:17:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 06:17:26,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:26,683 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:26,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:17:26,683 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:26,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1955137175, now seen corresponding path program 1 times [2020-10-13 06:17:26,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:26,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856786073] [2020-10-13 06:17:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:17:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:17:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:31,907 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:31,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:31,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:32,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:32,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:32,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:17:32,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:17:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 06:17:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 06:17:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:17:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 153 proven. 63 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:17:32,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856786073] [2020-10-13 06:17:32,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:32,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:32,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785580789] [2020-10-13 06:17:32,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:32,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:32,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:32,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:32,344 INFO L87 Difference]: Start difference. First operand 27891 states and 31607 transitions. Second operand 7 states. [2020-10-13 06:17:32,470 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:33,387 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:17:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:34,784 INFO L93 Difference]: Finished difference Result 57968 states and 65879 transitions. [2020-10-13 06:17:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:34,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-13 06:17:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:34,834 INFO L225 Difference]: With dead ends: 57968 [2020-10-13 06:17:34,834 INFO L226 Difference]: Without dead ends: 30395 [2020-10-13 06:17:34,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30395 states. [2020-10-13 06:17:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30395 to 30377. [2020-10-13 06:17:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30377 states. [2020-10-13 06:17:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30377 states to 30377 states and 34376 transitions. [2020-10-13 06:17:35,602 INFO L78 Accepts]: Start accepts. Automaton has 30377 states and 34376 transitions. Word has length 313 [2020-10-13 06:17:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:35,603 INFO L479 AbstractCegarLoop]: Abstraction has 30377 states and 34376 transitions. [2020-10-13 06:17:35,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 30377 states and 34376 transitions. [2020-10-13 06:17:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-13 06:17:35,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:35,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 06:17:35,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:17:35,635 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:35,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2061475221, now seen corresponding path program 1 times [2020-10-13 06:17:35,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:35,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050047906] [2020-10-13 06:17:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:36,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:17:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:17:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:40,871 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:40,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:40,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:17:40,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:40,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:17:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:41,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:17:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:41,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:17:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:17:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:41,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 06:17:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 06:17:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:41,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:41,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 199 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-13 06:17:41,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050047906] [2020-10-13 06:17:41,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:41,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:41,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046565421] [2020-10-13 06:17:41,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:41,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:41,342 INFO L87 Difference]: Start difference. First operand 30377 states and 34376 transitions. Second operand 7 states. [2020-10-13 06:17:41,479 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:42,610 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:43,664 INFO L93 Difference]: Finished difference Result 61713 states and 69829 transitions. [2020-10-13 06:17:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:43,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-13 06:17:43,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:43,718 INFO L225 Difference]: With dead ends: 61713 [2020-10-13 06:17:43,718 INFO L226 Difference]: Without dead ends: 31654 [2020-10-13 06:17:43,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 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 06:17:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31654 states. [2020-10-13 06:17:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31654 to 31219. [2020-10-13 06:17:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31219 states. [2020-10-13 06:17:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31219 states to 31219 states and 35272 transitions. [2020-10-13 06:17:44,255 INFO L78 Accepts]: Start accepts. Automaton has 31219 states and 35272 transitions. Word has length 353 [2020-10-13 06:17:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:44,256 INFO L479 AbstractCegarLoop]: Abstraction has 31219 states and 35272 transitions. [2020-10-13 06:17:44,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 31219 states and 35272 transitions. [2020-10-13 06:17:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 06:17:44,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:44,290 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:44,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:17:44,291 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:44,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:44,291 INFO L82 PathProgramCache]: Analyzing trace with hash -113353423, now seen corresponding path program 1 times [2020-10-13 06:17:44,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:44,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055580710] [2020-10-13 06:17:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:17:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 06:17:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:49,612 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:49,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:49,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:49,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:17:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:17:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:50,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:17:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 06:17:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:17:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:17:50,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055580710] [2020-10-13 06:17:50,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:50,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:50,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790400311] [2020-10-13 06:17:50,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:50,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:50,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:50,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:50,560 INFO L87 Difference]: Start difference. First operand 31219 states and 35272 transitions. Second operand 7 states. [2020-10-13 06:17:50,849 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:17:51,724 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:54,428 INFO L93 Difference]: Finished difference Result 64228 states and 72990 transitions. [2020-10-13 06:17:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:54,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-13 06:17:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:54,513 INFO L225 Difference]: With dead ends: 64228 [2020-10-13 06:17:54,513 INFO L226 Difference]: Without dead ends: 33745 [2020-10-13 06:17:54,557 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 06:17:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33745 states. [2020-10-13 06:17:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33745 to 33737. [2020-10-13 06:17:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33737 states. [2020-10-13 06:17:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33737 states to 33737 states and 38053 transitions. [2020-10-13 06:17:55,211 INFO L78 Accepts]: Start accepts. Automaton has 33737 states and 38053 transitions. Word has length 376 [2020-10-13 06:17:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:55,211 INFO L479 AbstractCegarLoop]: Abstraction has 33737 states and 38053 transitions. [2020-10-13 06:17:55,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 33737 states and 38053 transitions. [2020-10-13 06:17:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-13 06:17:55,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:55,250 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:55,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:17:55,251 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash 560012529, now seen corresponding path program 1 times [2020-10-13 06:17:55,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:55,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954202612] [2020-10-13 06:17:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 06:18:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:18:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:00,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:18:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:18:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 06:18:00,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 06:18:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:00,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:00,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 06:18:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:01,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:01,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:18:01,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:18:01,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:18:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 232 proven. 135 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 06:18:01,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954202612] [2020-10-13 06:18:01,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:01,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:01,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917583781] [2020-10-13 06:18:01,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:01,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:01,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:01,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:01,197 INFO L87 Difference]: Start difference. First operand 33737 states and 38053 transitions. Second operand 7 states. [2020-10-13 06:18:01,421 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:02,291 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:18:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:04,919 INFO L93 Difference]: Finished difference Result 68628 states and 80147 transitions. [2020-10-13 06:18:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:04,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-13 06:18:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:05,000 INFO L225 Difference]: With dead ends: 68628 [2020-10-13 06:18:05,000 INFO L226 Difference]: Without dead ends: 35209 [2020-10-13 06:18:05,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 06:18:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35209 states. [2020-10-13 06:18:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35209 to 34157. [2020-10-13 06:18:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34157 states. [2020-10-13 06:18:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34157 states to 34157 states and 38505 transitions. [2020-10-13 06:18:05,569 INFO L78 Accepts]: Start accepts. Automaton has 34157 states and 38505 transitions. Word has length 391 [2020-10-13 06:18:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:05,570 INFO L479 AbstractCegarLoop]: Abstraction has 34157 states and 38505 transitions. [2020-10-13 06:18:05,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 34157 states and 38505 transitions. [2020-10-13 06:18:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-13 06:18:05,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:05,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:05,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:18:05,595 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:05,596 INFO L82 PathProgramCache]: Analyzing trace with hash 636289368, now seen corresponding path program 1 times [2020-10-13 06:18:05,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:05,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976800405] [2020-10-13 06:18:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 06:18:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:18:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:10,980 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:10,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:10,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:10,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:18:10,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:11,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:11,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:18:11,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:11,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:18:11,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:18:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:11,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:11,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:18:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 06:18:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:18:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 06:18:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:11,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:11,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:11,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:18:11,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-13 06:18:11,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:18:11,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-13 06:18:12,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976800405] [2020-10-13 06:18:12,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:12,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:12,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000625871] [2020-10-13 06:18:12,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:12,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:12,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:12,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:12,358 INFO L87 Difference]: Start difference. First operand 34157 states and 38505 transitions. Second operand 7 states. [2020-10-13 06:18:12,499 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:13,461 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:18:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:15,171 INFO L93 Difference]: Finished difference Result 72607 states and 81948 transitions. [2020-10-13 06:18:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:15,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-13 06:18:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:15,240 INFO L225 Difference]: With dead ends: 72607 [2020-10-13 06:18:15,240 INFO L226 Difference]: Without dead ends: 39817 [2020-10-13 06:18:15,276 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 06:18:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39817 states. [2020-10-13 06:18:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39817 to 39181. [2020-10-13 06:18:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39181 states. [2020-10-13 06:18:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39181 states to 39181 states and 43763 transitions. [2020-10-13 06:18:15,758 INFO L78 Accepts]: Start accepts. Automaton has 39181 states and 43763 transitions. Word has length 396 [2020-10-13 06:18:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:15,758 INFO L479 AbstractCegarLoop]: Abstraction has 39181 states and 43763 transitions. [2020-10-13 06:18:15,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 39181 states and 43763 transitions. [2020-10-13 06:18:15,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 06:18:15,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:15,786 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:15,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:18:15,786 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:15,787 INFO L82 PathProgramCache]: Analyzing trace with hash -143797450, now seen corresponding path program 1 times [2020-10-13 06:18:15,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:15,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574434219] [2020-10-13 06:18:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 06:18:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:18:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:21,221 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:21,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:18:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:21,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:18:21,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:18:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:18:21,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 06:18:21,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:21,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:18:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:18:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 06:18:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:18:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:21,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 06:18:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:22,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:18:22,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-13 06:18:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:18:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-13 06:18:23,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574434219] [2020-10-13 06:18:23,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:23,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:23,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381903826] [2020-10-13 06:18:23,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:23,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:23,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:23,046 INFO L87 Difference]: Start difference. First operand 39181 states and 43763 transitions. Second operand 7 states. [2020-10-13 06:18:23,303 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:18:23,643 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:18:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:26,675 INFO L93 Difference]: Finished difference Result 81488 states and 93765 transitions. [2020-10-13 06:18:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:26,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-13 06:18:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:26,767 INFO L225 Difference]: With dead ends: 81488 [2020-10-13 06:18:26,767 INFO L226 Difference]: Without dead ends: 43885 [2020-10-13 06:18:26,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43885 states. [2020-10-13 06:18:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43885 to 42619. [2020-10-13 06:18:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42619 states. [2020-10-13 06:18:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42619 states to 42619 states and 47466 transitions. [2020-10-13 06:18:27,390 INFO L78 Accepts]: Start accepts. Automaton has 42619 states and 47466 transitions. Word has length 404 [2020-10-13 06:18:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:27,390 INFO L479 AbstractCegarLoop]: Abstraction has 42619 states and 47466 transitions. [2020-10-13 06:18:27,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 42619 states and 47466 transitions. [2020-10-13 06:18:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-13 06:18:27,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:27,419 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:27,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 06:18:27,419 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:27,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1132973486, now seen corresponding path program 1 times [2020-10-13 06:18:27,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:27,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856162317] [2020-10-13 06:18:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:32,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-13 06:18:32,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:18:32,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 06:18:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:18:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:32,819 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:32,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:32,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:32,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:18:32,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:32,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:32,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:18:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:32,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:18:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:33,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:18:33,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:18:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:18:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:33,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:33,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:18:33,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:18:33,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:18:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 06:18:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:33,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:33,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:18:33,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-13 06:18:34,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856162317] [2020-10-13 06:18:34,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:34,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:34,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835200529] [2020-10-13 06:18:34,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:34,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:34,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:34,019 INFO L87 Difference]: Start difference. First operand 42619 states and 47466 transitions. Second operand 7 states. [2020-10-13 06:18:34,412 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:18:36,173 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:18:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:37,795 INFO L93 Difference]: Finished difference Result 86296 states and 99261 transitions. [2020-10-13 06:18:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:18:37,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-13 06:18:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:37,899 INFO L225 Difference]: With dead ends: 86296 [2020-10-13 06:18:37,899 INFO L226 Difference]: Without dead ends: 45928 [2020-10-13 06:18:37,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:18:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45928 states. [2020-10-13 06:18:38,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45928 to 44743. [2020-10-13 06:18:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44743 states. [2020-10-13 06:18:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44743 states to 44743 states and 49743 transitions. [2020-10-13 06:18:38,595 INFO L78 Accepts]: Start accepts. Automaton has 44743 states and 49743 transitions. Word has length 408 [2020-10-13 06:18:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:38,596 INFO L479 AbstractCegarLoop]: Abstraction has 44743 states and 49743 transitions. [2020-10-13 06:18:38,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 44743 states and 49743 transitions. [2020-10-13 06:18:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-13 06:18:38,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:38,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:18:38,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 06:18:38,639 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:38,640 INFO L82 PathProgramCache]: Analyzing trace with hash 72209408, now seen corresponding path program 1 times [2020-10-13 06:18:38,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:38,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804782847] [2020-10-13 06:18:38,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:18:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:18:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:43,967 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:18:43,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:44,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:18:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:18:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:44,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:44,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:18:44,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:44,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 06:18:44,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 06:18:44,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 06:18:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:44,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:44,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:18:44,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:44,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:18:44,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:18:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 301 proven. 63 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 06:18:44,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804782847] [2020-10-13 06:18:44,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:44,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:44,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114088082] [2020-10-13 06:18:44,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:44,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:44,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:44,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:44,714 INFO L87 Difference]: Start difference. First operand 44743 states and 49743 transitions. Second operand 7 states. [2020-10-13 06:18:44,937 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:45,811 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:18:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:48,366 INFO L93 Difference]: Finished difference Result 88789 states and 98729 transitions. [2020-10-13 06:18:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:48,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-13 06:18:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:48,482 INFO L225 Difference]: With dead ends: 88789 [2020-10-13 06:18:48,483 INFO L226 Difference]: Without dead ends: 44366 [2020-10-13 06:18:48,545 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 06:18:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44366 states. [2020-10-13 06:18:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44366 to 42464. [2020-10-13 06:18:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42464 states. [2020-10-13 06:18:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42464 states to 42464 states and 46647 transitions. [2020-10-13 06:18:49,145 INFO L78 Accepts]: Start accepts. Automaton has 42464 states and 46647 transitions. Word has length 408 [2020-10-13 06:18:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:49,145 INFO L479 AbstractCegarLoop]: Abstraction has 42464 states and 46647 transitions. [2020-10-13 06:18:49,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 42464 states and 46647 transitions. [2020-10-13 06:18:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-13 06:18:49,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:49,176 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:49,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 06:18:49,177 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash 967135691, now seen corresponding path program 1 times [2020-10-13 06:18:49,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:49,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035409502] [2020-10-13 06:18:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 06:18:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:54,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:54,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:54,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:18:54,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:18:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:54,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:18:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:54,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:18:54,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 06:18:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:18:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:18:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:54,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:54,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:18:54,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-13 06:18:54,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 06:18:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:18:56,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035409502] [2020-10-13 06:18:56,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:56,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:56,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477282072] [2020-10-13 06:18:56,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:56,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:56,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:56,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:56,073 INFO L87 Difference]: Start difference. First operand 42464 states and 46647 transitions. Second operand 7 states. [2020-10-13 06:18:56,201 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:57,376 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129