/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/Problem12_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:16:49,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:16:49,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:16:49,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:16:49,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:16:49,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:16:49,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:16:49,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:16:49,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:16:49,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:16:49,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:16:49,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:16:49,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:16:49,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:16:49,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:16:49,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:16:49,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:16:49,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:16:49,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:16:49,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:16:49,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:16:49,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:16:49,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:16:49,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:16:49,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:16:49,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:16:49,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:16:49,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:16:49,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:16:49,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:16:49,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:16:49,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:16:49,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:16:49,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:16:49,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:16:49,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:16:49,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:16:49,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:16:49,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:16:49,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:16:49,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:16:49,660 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 08:16:49,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:16:49,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:16:49,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:16:49,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:16:49,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:16:49,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:16:49,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:16:49,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:16:49,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:16:49,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:16:49,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:16:49,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:16:49,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:16:49,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:16:49,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:16:49,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:16:49,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:16:49,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:16:49,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:16:49,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:16:49,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:16:49,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:16:49,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:16:49,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:16:49,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:16:49,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:16:49,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:16:49,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:16:49,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:16:49,710 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 08:16:50,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:16:50,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:16:50,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:16:50,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:16:50,036 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:16:50,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2020-10-13 08:16:50,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d53bb6313/fbb75372a78740d99c0e7449424fada6/FLAG15c66f874 [2020-10-13 08:16:50,924 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:16:50,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2020-10-13 08:16:50,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d53bb6313/fbb75372a78740d99c0e7449424fada6/FLAG15c66f874 [2020-10-13 08:16:51,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d53bb6313/fbb75372a78740d99c0e7449424fada6 [2020-10-13 08:16:51,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:16:51,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:16:51,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:16:51,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:16:51,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:16:51,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:16:51" (1/1) ... [2020-10-13 08:16:51,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490952e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:51, skipping insertion in model container [2020-10-13 08:16:51,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:16:51" (1/1) ... [2020-10-13 08:16:51,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:16:51,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:16:53,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:16:53,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:16:54,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:16:54,067 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:16:54,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54 WrapperNode [2020-10-13 08:16:54,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:16:54,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:16:54,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:16:54,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:16:54,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (1/1) ... [2020-10-13 08:16:54,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:16:54,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:16:54,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:16:54,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:16:54,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (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 08:16:54,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:16:54,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:16:54,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:16:54,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:16:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:16:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:16:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:16:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:16:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:16:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:16:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:16:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:16:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:16:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:16:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:16:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:16:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:17:01,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:17:01,470 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:17:01,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:17:01 BoogieIcfgContainer [2020-10-13 08:17:01,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:17:01,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:17:01,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:17:01,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:17:01,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:16:51" (1/3) ... [2020-10-13 08:17:01,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79413df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:17:01, skipping insertion in model container [2020-10-13 08:17:01,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:54" (2/3) ... [2020-10-13 08:17:01,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79413df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:17:01, skipping insertion in model container [2020-10-13 08:17:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:17:01" (3/3) ... [2020-10-13 08:17:01,519 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label13.c [2020-10-13 08:17:01,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:17:01,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:17:01,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:17:01,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:17:01,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:17:01,618 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:17:01,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:17:01,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:17:01,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:17:01,619 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:17:01,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:17:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:17:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 08:17:01,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:01,694 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] [2020-10-13 08:17:01,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash -977354555, now seen corresponding path program 1 times [2020-10-13 08:17:01,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:01,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638205459] [2020-10-13 08:17:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 08:17:02,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-13 08:17:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:17:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 08:17:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:02,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:17:02,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:02,768 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 08:17:02,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638205459] [2020-10-13 08:17:02,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:17:02,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:17:02,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106097544] [2020-10-13 08:17:02,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:17:02,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:02,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:17:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:17:02,812 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:17:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:12,935 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-13 08:17:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:12,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 08:17:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:12,974 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:17:12,974 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:17:12,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:17:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-13 08:17:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-13 08:17:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-13 08:17:13,150 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 34 [2020-10-13 08:17:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:13,151 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-13 08:17:13,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:17:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-13 08:17:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 08:17:13,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:13,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:13,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:17:13,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash 424408621, now seen corresponding path program 1 times [2020-10-13 08:17:13,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:13,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006169420] [2020-10-13 08:17:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:13,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:13,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:17:13,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 08:17:13,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:17:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:17:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:13,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:13,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:17:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:17:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:17:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:17:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:13,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006169420] [2020-10-13 08:17:13,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:13,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:13,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756075097] [2020-10-13 08:17:13,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:13,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:13,724 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 5 states. [2020-10-13 08:17:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:25,039 INFO L93 Difference]: Finished difference Result 4677 states and 7291 transitions. [2020-10-13 08:17:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:25,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 08:17:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:25,064 INFO L225 Difference]: With dead ends: 4677 [2020-10-13 08:17:25,064 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:17:25,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:17:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3117. [2020-10-13 08:17:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-13 08:17:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4311 transitions. [2020-10-13 08:17:25,202 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4311 transitions. Word has length 109 [2020-10-13 08:17:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:25,206 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4311 transitions. [2020-10-13 08:17:25,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4311 transitions. [2020-10-13 08:17:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:17:25,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:25,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:25,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:17:25,220 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:25,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:25,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1459302921, now seen corresponding path program 1 times [2020-10-13 08:17:25,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:25,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660368106] [2020-10-13 08:17:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:26,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:26,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:17:26,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-13 08:17:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 08:17:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:17:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:17:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:17:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:17:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 08:17:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:17:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:27,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660368106] [2020-10-13 08:17:27,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:27,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:17:27,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318297577] [2020-10-13 08:17:27,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:17:27,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:27,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:17:27,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:27,466 INFO L87 Difference]: Start difference. First operand 3117 states and 4311 transitions. Second operand 6 states. [2020-10-13 08:17:42,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:42,431 INFO L93 Difference]: Finished difference Result 7788 states and 11146 transitions. [2020-10-13 08:17:42,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:17:42,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-13 08:17:42,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:42,459 INFO L225 Difference]: With dead ends: 7788 [2020-10-13 08:17:42,459 INFO L226 Difference]: Without dead ends: 4677 [2020-10-13 08:17:42,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:17:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2020-10-13 08:17:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4673. [2020-10-13 08:17:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:17:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6300 transitions. [2020-10-13 08:17:42,598 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6300 transitions. Word has length 111 [2020-10-13 08:17:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:42,599 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6300 transitions. [2020-10-13 08:17:42,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:17:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6300 transitions. [2020-10-13 08:17:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:17:42,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:42,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:42,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:17:42,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:42,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1020822581, now seen corresponding path program 1 times [2020-10-13 08:17:42,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:42,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471004158] [2020-10-13 08:17:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:17:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-13 08:17:43,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:17:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:17:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:43,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:43,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:43,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:43,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:17:43,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:43,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:17:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:17:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:17:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:44,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471004158] [2020-10-13 08:17:44,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:44,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:17:44,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517773839] [2020-10-13 08:17:44,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:17:44,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:44,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:17:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:44,081 INFO L87 Difference]: Start difference. First operand 4673 states and 6300 transitions. Second operand 6 states. [2020-10-13 08:17:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:57,817 INFO L93 Difference]: Finished difference Result 11672 states and 16385 transitions. [2020-10-13 08:17:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:17:57,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-13 08:17:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:57,853 INFO L225 Difference]: With dead ends: 11672 [2020-10-13 08:17:57,853 INFO L226 Difference]: Without dead ends: 7005 [2020-10-13 08:17:57,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:17:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2020-10-13 08:17:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 7001. [2020-10-13 08:17:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7001 states. [2020-10-13 08:17:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 9579 transitions. [2020-10-13 08:17:58,147 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 9579 transitions. Word has length 137 [2020-10-13 08:17:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:58,149 INFO L479 AbstractCegarLoop]: Abstraction has 7001 states and 9579 transitions. [2020-10-13 08:17:58,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:17:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 9579 transitions. [2020-10-13 08:17:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 08:17:58,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:58,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:17:58,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:17:58,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash -843140631, now seen corresponding path program 1 times [2020-10-13 08:17:58,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:58,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127556862] [2020-10-13 08:17:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 08:18:00,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:18:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-13 08:18:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 08:18:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:18:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:00,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:00,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:00,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:18:00,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:00,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:00,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:18:00,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:18:00,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:18:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:00,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:00,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:00,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:18:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:18:00,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:18:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:18:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 08:18:00,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127556862] [2020-10-13 08:18:00,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:00,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:00,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048955496] [2020-10-13 08:18:00,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:00,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:00,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:00,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:00,340 INFO L87 Difference]: Start difference. First operand 7001 states and 9579 transitions. Second operand 5 states. [2020-10-13 08:18:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:11,222 INFO L93 Difference]: Finished difference Result 21002 states and 29314 transitions. [2020-10-13 08:18:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:11,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-13 08:18:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:11,303 INFO L225 Difference]: With dead ends: 21002 [2020-10-13 08:18:11,303 INFO L226 Difference]: Without dead ends: 14007 [2020-10-13 08:18:11,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2020-10-13 08:18:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 14003. [2020-10-13 08:18:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14003 states. [2020-10-13 08:18:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14003 states to 14003 states and 19407 transitions. [2020-10-13 08:18:11,779 INFO L78 Accepts]: Start accepts. Automaton has 14003 states and 19407 transitions. Word has length 182 [2020-10-13 08:18:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:11,780 INFO L479 AbstractCegarLoop]: Abstraction has 14003 states and 19407 transitions. [2020-10-13 08:18:11,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14003 states and 19407 transitions. [2020-10-13 08:18:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 08:18:11,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:11,791 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:18:11,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:18:11,792 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1517905747, now seen corresponding path program 1 times [2020-10-13 08:18:11,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:11,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311711655] [2020-10-13 08:18:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:11,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:12,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 08:18:14,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:18:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2858 [2020-10-13 08:18:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-13 08:18:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:18:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:14,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:18:14,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:18:14,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:18:14,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:18:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:15,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:18:15,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:18:15,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:18:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:18:15,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311711655] [2020-10-13 08:18:15,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:15,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:15,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023997974] [2020-10-13 08:18:15,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:15,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:15,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:15,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:15,113 INFO L87 Difference]: Start difference. First operand 14003 states and 19407 transitions. Second operand 5 states. [2020-10-13 08:18:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:29,721 INFO L93 Difference]: Finished difference Result 41949 states and 59742 transitions. [2020-10-13 08:18:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:29,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-13 08:18:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:29,833 INFO L225 Difference]: With dead ends: 41949 [2020-10-13 08:18:29,834 INFO L226 Difference]: Without dead ends: 27952 [2020-10-13 08:18:29,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27952 states. [2020-10-13 08:18:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27952 to 27177. [2020-10-13 08:18:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27177 states. [2020-10-13 08:18:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27177 states to 27177 states and 38256 transitions. [2020-10-13 08:18:30,527 INFO L78 Accepts]: Start accepts. Automaton has 27177 states and 38256 transitions. Word has length 228 [2020-10-13 08:18:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:30,527 INFO L479 AbstractCegarLoop]: Abstraction has 27177 states and 38256 transitions. [2020-10-13 08:18:30,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 27177 states and 38256 transitions. [2020-10-13 08:18:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-13 08:18:30,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:30,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:30,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:18:30,575 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1222747161, now seen corresponding path program 1 times [2020-10-13 08:18:30,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:30,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238222512] [2020-10-13 08:18:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:30,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:35,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-13 08:18:35,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:18:35,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 08:18:35,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-13 08:18:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:18:35,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:35,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:35,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:35,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:35,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:18:35,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:35,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:35,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:18:35,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:18:35,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:18:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:36,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:36,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 08:18:36,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 08:18:36,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-13 08:18:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:36,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 08:18:36,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:18:36,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:18:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:18:36,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238222512] [2020-10-13 08:18:36,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:36,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:36,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013903469] [2020-10-13 08:18:36,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:36,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:36,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:36,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:36,671 INFO L87 Difference]: Start difference. First operand 27177 states and 38256 transitions. Second operand 5 states. [2020-10-13 08:18:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:51,936 INFO L93 Difference]: Finished difference Result 76771 states and 110938 transitions. [2020-10-13 08:18:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:51,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-13 08:18:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:52,131 INFO L225 Difference]: With dead ends: 76771 [2020-10-13 08:18:52,131 INFO L226 Difference]: Without dead ends: 49600 [2020-10-13 08:18:52,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:52,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49600 states. [2020-10-13 08:18:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49600 to 48829. [2020-10-13 08:18:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48829 states. [2020-10-13 08:18:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48829 states to 48829 states and 65742 transitions. [2020-10-13 08:18:53,224 INFO L78 Accepts]: Start accepts. Automaton has 48829 states and 65742 transitions. Word has length 411 [2020-10-13 08:18:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:53,226 INFO L479 AbstractCegarLoop]: Abstraction has 48829 states and 65742 transitions. [2020-10-13 08:18:53,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 48829 states and 65742 transitions. [2020-10-13 08:18:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-10-13 08:18:53,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:53,352 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:53,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:18:53,352 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:53,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1475333115, now seen corresponding path program 1 times [2020-10-13 08:18:53,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:53,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795587075] [2020-10-13 08:18:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 776 [2020-10-13 08:18:58,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:18:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-13 08:18:58,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:18:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:18:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:58,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:18:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:18:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:18:58,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:18:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:18:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:18:59,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:18:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 08:18:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:18:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:18:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:18:59,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-13 08:18:59,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-13 08:18:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:18:59,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:18:59,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:18:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:59,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:18:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:18:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 155 proven. 72 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:19:01,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795587075] [2020-10-13 08:19:01,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:01,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:01,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902833384] [2020-10-13 08:19:01,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:01,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:01,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:01,170 INFO L87 Difference]: Start difference. First operand 48829 states and 65742 transitions. Second operand 7 states. [2020-10-13 08:19:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:13,955 INFO L93 Difference]: Finished difference Result 97967 states and 142343 transitions. [2020-10-13 08:19:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:19:13,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 758 [2020-10-13 08:19:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:14,218 INFO L225 Difference]: With dead ends: 97967 [2020-10-13 08:19:14,219 INFO L226 Difference]: Without dead ends: 49848 [2020-10-13 08:19:14,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:19:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49848 states. [2020-10-13 08:19:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49848 to 49181. [2020-10-13 08:19:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49181 states. [2020-10-13 08:19:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49181 states to 49181 states and 65562 transitions. [2020-10-13 08:19:15,937 INFO L78 Accepts]: Start accepts. Automaton has 49181 states and 65562 transitions. Word has length 758 [2020-10-13 08:19:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:15,938 INFO L479 AbstractCegarLoop]: Abstraction has 49181 states and 65562 transitions. [2020-10-13 08:19:15,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:19:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 49181 states and 65562 transitions. [2020-10-13 08:19:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-13 08:19:16,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:16,029 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:16,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:19:16,029 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:16,030 INFO L82 PathProgramCache]: Analyzing trace with hash -905357961, now seen corresponding path program 1 times [2020-10-13 08:19:16,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:16,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920992769] [2020-10-13 08:19:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-13 08:19:21,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 08:19:21,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:19:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:19:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:21,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:21,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:21,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:21,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:21,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:19:21,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:19:21,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:19:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 08:19:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:19:21,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:19:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:19:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:21,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 08:19:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:19:21,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 08:19:21,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-13 08:19:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:22,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:19:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:22,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:19:22,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 08:19:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:19:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:22,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:22,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:19:22,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:19:22,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 155 proven. 72 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-13 08:19:22,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920992769] [2020-10-13 08:19:22,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:22,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:19:22,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431434804] [2020-10-13 08:19:22,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:19:22,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:22,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:19:22,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:19:22,935 INFO L87 Difference]: Start difference. First operand 49181 states and 65562 transitions. Second operand 8 states. [2020-10-13 08:19:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:43,598 INFO L93 Difference]: Finished difference Result 117136 states and 160060 transitions. [2020-10-13 08:19:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:19:43,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 772 [2020-10-13 08:19:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:43,820 INFO L225 Difference]: With dead ends: 117136 [2020-10-13 08:19:43,821 INFO L226 Difference]: Without dead ends: 68728 [2020-10-13 08:19:43,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:19:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68728 states. [2020-10-13 08:19:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68728 to 68659. [2020-10-13 08:19:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68659 states. [2020-10-13 08:19:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68659 states to 68659 states and 88247 transitions. [2020-10-13 08:19:45,971 INFO L78 Accepts]: Start accepts. Automaton has 68659 states and 88247 transitions. Word has length 772 [2020-10-13 08:19:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:45,972 INFO L479 AbstractCegarLoop]: Abstraction has 68659 states and 88247 transitions. [2020-10-13 08:19:45,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:19:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 68659 states and 88247 transitions. [2020-10-13 08:19:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-13 08:19:46,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:46,070 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:46,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:19:46,071 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 456347575, now seen corresponding path program 1 times [2020-10-13 08:19:46,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:46,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615904265] [2020-10-13 08:19:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-13 08:19:51,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 08:19:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:19:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:19:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:19:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:51,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:19:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:19:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:51,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:19:51,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-13 08:19:51,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 08:19:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 08:19:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:19:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:19:51,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 08:19:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 08:19:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:52,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:19:52,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 08:19:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-13 08:19:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:19:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:52,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:52,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:19:52,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:19:52,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:52,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:19:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:52,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:52,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:19:52,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:19:52,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 81 proven. 184 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 08:19:53,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615904265] [2020-10-13 08:19:53,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:53,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:53,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199604483] [2020-10-13 08:19:53,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:53,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:53,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:53,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:53,234 INFO L87 Difference]: Start difference. First operand 68659 states and 88247 transitions. Second operand 7 states. [2020-10-13 08:20:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:16,796 INFO L93 Difference]: Finished difference Result 157108 states and 206021 transitions. [2020-10-13 08:20:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:20:16,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2020-10-13 08:20:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:17,099 INFO L225 Difference]: With dead ends: 157108 [2020-10-13 08:20:17,100 INFO L226 Difference]: Without dead ends: 89222 [2020-10-13 08:20:17,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:20:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89222 states. [2020-10-13 08:20:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89222 to 85320. [2020-10-13 08:20:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85320 states. [2020-10-13 08:20:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85320 states to 85320 states and 108382 transitions. [2020-10-13 08:20:18,631 INFO L78 Accepts]: Start accepts. Automaton has 85320 states and 108382 transitions. Word has length 804 [2020-10-13 08:20:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:18,631 INFO L479 AbstractCegarLoop]: Abstraction has 85320 states and 108382 transitions. [2020-10-13 08:20:18,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:20:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 85320 states and 108382 transitions. [2020-10-13 08:20:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-13 08:20:18,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:18,729 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:18,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:20:18,730 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash 552923635, now seen corresponding path program 1 times [2020-10-13 08:20:18,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:18,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701395504] [2020-10-13 08:20:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...