/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/Problem17_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:28:31,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:28:31,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:28:31,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:28:31,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:28:31,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:28:31,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:28:31,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:28:31,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:28:31,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:28:31,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:28:31,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:28:31,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:28:31,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:28:31,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:28:31,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:28:31,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:28:31,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:28:31,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:28:31,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:28:31,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:28:31,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:28:31,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:28:31,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:28:31,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:28:31,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:28:31,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:28:31,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:28:31,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:28:31,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:28:31,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:28:31,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:28:31,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:28:31,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:28:31,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:28:31,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:28:31,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:28:31,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:28:31,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:28:31,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:28:31,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:28:31,744 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 09:28:31,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:28:31,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:28:31,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:28:31,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:28:31,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:28:31,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:28:31,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:28:31,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:28:31,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:28:31,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:28:31,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:28:31,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:28:31,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:28:31,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:28:31,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:28:31,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:28:31,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:28:31,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:28:31,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:28:31,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:28:31,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:28:31,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:28:31,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:28:31,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:28:31,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:28:31,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:28:31,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:28:31,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:28:31,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:28:31,780 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 09:28:32,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:28:32,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:28:32,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:28:32,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:28:32,225 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:28:32,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12.c [2020-10-13 09:28:32,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ac56c3b/a1f6a169a4fb4308bc3b83c854635a36/FLAG5afcd9d63 [2020-10-13 09:28:33,199 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:28:33,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label12.c [2020-10-13 09:28:33,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ac56c3b/a1f6a169a4fb4308bc3b83c854635a36/FLAG5afcd9d63 [2020-10-13 09:28:33,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ac56c3b/a1f6a169a4fb4308bc3b83c854635a36 [2020-10-13 09:28:33,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:28:33,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:28:33,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:28:33,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:28:33,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:28:33,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:28:33" (1/1) ... [2020-10-13 09:28:33,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f05bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:33, skipping insertion in model container [2020-10-13 09:28:33,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:28:33" (1/1) ... [2020-10-13 09:28:33,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:28:33,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:28:35,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:28:35,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:28:35,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:28:35,686 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:28:35,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35 WrapperNode [2020-10-13 09:28:35,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:28:35,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:28:35,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:28:35,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:28:35,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:35,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:35,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:35,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:35,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:36,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... [2020-10-13 09:28:36,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:28:36,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:28:36,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:28:36,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:28:36,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:28:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:28:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:28:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:28:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:28:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:28:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:28:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:28:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:28:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:28:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:28:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:28:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:28:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:28:43,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:28:43,690 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:28:43,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:28:43 BoogieIcfgContainer [2020-10-13 09:28:43,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:28:43,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:28:43,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:28:43,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:28:43,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:28:33" (1/3) ... [2020-10-13 09:28:43,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4707ae91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:28:43, skipping insertion in model container [2020-10-13 09:28:43,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:35" (2/3) ... [2020-10-13 09:28:43,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4707ae91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:28:43, skipping insertion in model container [2020-10-13 09:28:43,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:28:43" (3/3) ... [2020-10-13 09:28:43,712 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label12.c [2020-10-13 09:28:43,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:28:43,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:28:43,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:28:43,790 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:28:43,790 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:28:43,790 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:28:43,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:28:43,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:28:43,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:28:43,791 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:28:43,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:28:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:28:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 09:28:43,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:43,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:28:43,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:43,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1305319639, now seen corresponding path program 1 times [2020-10-13 09:28:43,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:43,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141502225] [2020-10-13 09:28:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 09:28:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-13 09:28:44,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:28:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:28:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 09:28:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:28:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:44,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:44,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:28:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:28:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:45,000 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 09:28:45,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141502225] [2020-10-13 09:28:45,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:28:45,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:28:45,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275736559] [2020-10-13 09:28:45,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:45,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:45,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:45,040 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-13 09:29:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:03,380 INFO L93 Difference]: Finished difference Result 2167 states and 4005 transitions. [2020-10-13 09:29:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:29:03,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-13 09:29:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:03,416 INFO L225 Difference]: With dead ends: 2167 [2020-10-13 09:29:03,417 INFO L226 Difference]: Without dead ends: 1470 [2020-10-13 09:29:03,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-10-13 09:29:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1450. [2020-10-13 09:29:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-13 09:29:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2032 transitions. [2020-10-13 09:29:03,620 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2032 transitions. Word has length 39 [2020-10-13 09:29:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:03,621 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2032 transitions. [2020-10-13 09:29:03,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2032 transitions. [2020-10-13 09:29:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 09:29:03,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:03,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:03,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:29:03,629 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:03,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1368383281, now seen corresponding path program 1 times [2020-10-13 09:29:03,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:03,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119838776] [2020-10-13 09:29:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:04,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:29:04,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-13 09:29:04,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:29:04,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:29:04,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:29:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:04,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:04,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:29:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:04,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:05,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:29:05,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 09:29:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:29:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:05,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119838776] [2020-10-13 09:29:05,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:05,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:05,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380186661] [2020-10-13 09:29:05,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:05,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:05,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:05,284 INFO L87 Difference]: Start difference. First operand 1450 states and 2032 transitions. Second operand 5 states. [2020-10-13 09:29:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:21,654 INFO L93 Difference]: Finished difference Result 4245 states and 5992 transitions. [2020-10-13 09:29:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:21,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 09:29:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:21,768 INFO L225 Difference]: With dead ends: 4245 [2020-10-13 09:29:21,769 INFO L226 Difference]: Without dead ends: 2801 [2020-10-13 09:29:21,776 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 09:29:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2020-10-13 09:29:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2788. [2020-10-13 09:29:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-10-13 09:29:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3622 transitions. [2020-10-13 09:29:21,913 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3622 transitions. Word has length 113 [2020-10-13 09:29:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:21,914 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3622 transitions. [2020-10-13 09:29:21,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3622 transitions. [2020-10-13 09:29:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:29:21,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:21,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:21,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:29:21,922 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:21,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1430391076, now seen corresponding path program 1 times [2020-10-13 09:29:21,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:21,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16580148] [2020-10-13 09:29:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:24,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:29:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:29:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2846 [2020-10-13 09:29:24,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:29:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:29:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:24,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:29:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:24,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:25,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:29:25,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:29:25,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:29:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:29:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:25,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16580148] [2020-10-13 09:29:25,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:29:25,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:29:25,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041568399] [2020-10-13 09:29:25,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:25,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:25,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:25,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:25,229 INFO L87 Difference]: Start difference. First operand 2788 states and 3622 transitions. Second operand 5 states. [2020-10-13 09:29:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:41,961 INFO L93 Difference]: Finished difference Result 5130 states and 7048 transitions. [2020-10-13 09:29:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:41,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 09:29:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:41,997 INFO L225 Difference]: With dead ends: 5130 [2020-10-13 09:29:41,997 INFO L226 Difference]: Without dead ends: 3238 [2020-10-13 09:29:42,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:29:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2020-10-13 09:29:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 2794. [2020-10-13 09:29:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2020-10-13 09:29:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 3629 transitions. [2020-10-13 09:29:42,246 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 3629 transitions. Word has length 135 [2020-10-13 09:29:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:42,248 INFO L479 AbstractCegarLoop]: Abstraction has 2794 states and 3629 transitions. [2020-10-13 09:29:42,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 3629 transitions. [2020-10-13 09:29:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 09:29:42,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:42,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:42,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:29:42,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1393850510, now seen corresponding path program 1 times [2020-10-13 09:29:42,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:42,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877405636] [2020-10-13 09:29:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:45,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:29:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2714 [2020-10-13 09:29:45,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 09:29:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:29:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:45,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:45,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:45,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:29:45,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:29:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:45,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:45,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:29:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 09:29:45,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:29:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:45,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877405636] [2020-10-13 09:29:45,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:45,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:45,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515853788] [2020-10-13 09:29:45,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:45,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:45,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:45,575 INFO L87 Difference]: Start difference. First operand 2794 states and 3629 transitions. Second operand 5 states. [2020-10-13 09:30:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:01,400 INFO L93 Difference]: Finished difference Result 8228 states and 10822 transitions. [2020-10-13 09:30:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:01,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 09:30:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:01,442 INFO L225 Difference]: With dead ends: 8228 [2020-10-13 09:30:01,442 INFO L226 Difference]: Without dead ends: 5440 [2020-10-13 09:30:01,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 09:30:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2020-10-13 09:30:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 5429. [2020-10-13 09:30:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5429 states. [2020-10-13 09:30:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5429 states to 5429 states and 6801 transitions. [2020-10-13 09:30:01,636 INFO L78 Accepts]: Start accepts. Automaton has 5429 states and 6801 transitions. Word has length 148 [2020-10-13 09:30:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:01,638 INFO L479 AbstractCegarLoop]: Abstraction has 5429 states and 6801 transitions. [2020-10-13 09:30:01,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5429 states and 6801 transitions. [2020-10-13 09:30:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 09:30:01,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:01,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:01,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:30:01,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1118832350, now seen corresponding path program 1 times [2020-10-13 09:30:01,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:01,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058340788] [2020-10-13 09:30:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:03,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:03,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 09:30:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:30:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-13 09:30:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-13 09:30:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:30:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:03,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:03,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:03,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:30:03,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:03,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 09:30:03,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 09:30:03,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:30:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:30:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:03,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058340788] [2020-10-13 09:30:03,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:30:03,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:30:03,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109013784] [2020-10-13 09:30:03,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:03,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:03,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:03,682 INFO L87 Difference]: Start difference. First operand 5429 states and 6801 transitions. Second operand 5 states. [2020-10-13 09:30:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:20,252 INFO L93 Difference]: Finished difference Result 13048 states and 16725 transitions. [2020-10-13 09:30:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:20,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 09:30:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:20,300 INFO L225 Difference]: With dead ends: 13048 [2020-10-13 09:30:20,301 INFO L226 Difference]: Without dead ends: 7625 [2020-10-13 09:30:20,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2020-10-13 09:30:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7617. [2020-10-13 09:30:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7617 states. [2020-10-13 09:30:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7617 states to 7617 states and 9391 transitions. [2020-10-13 09:30:20,530 INFO L78 Accepts]: Start accepts. Automaton has 7617 states and 9391 transitions. Word has length 172 [2020-10-13 09:30:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:20,531 INFO L479 AbstractCegarLoop]: Abstraction has 7617 states and 9391 transitions. [2020-10-13 09:30:20,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7617 states and 9391 transitions. [2020-10-13 09:30:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:30:20,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:20,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:20,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:30:20,591 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -348237984, now seen corresponding path program 1 times [2020-10-13 09:30:20,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:20,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571137571] [2020-10-13 09:30:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:22,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:30:22,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:30:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-13 09:30:22,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:30:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:30:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:22,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:22,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:22,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:30:22,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:22,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:22,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:30:22,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 09:30:22,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:30:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:22,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571137571] [2020-10-13 09:30:22,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:22,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:22,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180464974] [2020-10-13 09:30:22,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:22,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:22,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:22,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:22,974 INFO L87 Difference]: Start difference. First operand 7617 states and 9391 transitions. Second operand 5 states. [2020-10-13 09:30:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:36,811 INFO L93 Difference]: Finished difference Result 13062 states and 16366 transitions. [2020-10-13 09:30:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:36,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:30:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:36,861 INFO L225 Difference]: With dead ends: 13062 [2020-10-13 09:30:36,862 INFO L226 Difference]: Without dead ends: 7625 [2020-10-13 09:30:36,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 09:30:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2020-10-13 09:30:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7617. [2020-10-13 09:30:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7617 states. [2020-10-13 09:30:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7617 states to 7617 states and 9380 transitions. [2020-10-13 09:30:37,091 INFO L78 Accepts]: Start accepts. Automaton has 7617 states and 9380 transitions. Word has length 180 [2020-10-13 09:30:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:37,091 INFO L479 AbstractCegarLoop]: Abstraction has 7617 states and 9380 transitions. [2020-10-13 09:30:37,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7617 states and 9380 transitions. [2020-10-13 09:30:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 09:30:37,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:37,096 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:37,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:30:37,097 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:37,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1271462431, now seen corresponding path program 1 times [2020-10-13 09:30:37,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:37,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780138733] [2020-10-13 09:30:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:37,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:42,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:42,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 09:30:42,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:30:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:30:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:30:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:30:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:42,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:42,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:42,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:30:42,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:42,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:42,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:30:42,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:42,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:30:42,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:42,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:30:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:42,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:30:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:30:42,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:30:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:30:42,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780138733] [2020-10-13 09:30:42,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:42,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:42,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118907150] [2020-10-13 09:30:42,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:42,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:42,661 INFO L87 Difference]: Start difference. First operand 7617 states and 9380 transitions. Second operand 5 states. [2020-10-13 09:30:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:52,568 INFO L93 Difference]: Finished difference Result 15284 states and 18883 transitions. [2020-10-13 09:30:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:52,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-13 09:30:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:52,594 INFO L225 Difference]: With dead ends: 15284 [2020-10-13 09:30:52,594 INFO L226 Difference]: Without dead ends: 7625 [2020-10-13 09:30:52,613 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 09:30:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2020-10-13 09:30:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7617. [2020-10-13 09:30:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7617 states. [2020-10-13 09:30:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7617 states to 7617 states and 9369 transitions. [2020-10-13 09:30:52,808 INFO L78 Accepts]: Start accepts. Automaton has 7617 states and 9369 transitions. Word has length 188 [2020-10-13 09:30:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:52,808 INFO L479 AbstractCegarLoop]: Abstraction has 7617 states and 9369 transitions. [2020-10-13 09:30:52,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7617 states and 9369 transitions. [2020-10-13 09:30:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-13 09:30:52,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:52,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:30:52,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:30:52,813 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 643391416, now seen corresponding path program 1 times [2020-10-13 09:30:52,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:52,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351035560] [2020-10-13 09:30:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:57,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 09:30:57,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:30:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:30:57,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:30:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:30:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:30:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:57,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:30:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:57,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:58,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:58,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:30:58,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:30:58,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:30:58,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:30:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:58,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:30:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:30:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:59,196 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-13 09:30:59,470 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-13 09:30:59,793 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-13 09:31:00,070 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-13 09:31:00,378 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-13 09:31:00,725 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-13 09:31:01,108 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-13 09:31:01,597 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-13 09:31:01,996 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-10-13 09:31:02,399 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-10-13 09:31:02,761 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-13 09:31:03,150 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-13 09:31:03,491 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-13 09:31:03,844 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-13 09:31:04,142 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-13 09:31:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:31:04,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351035560] [2020-10-13 09:31:04,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:04,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 09:31:04,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371001022] [2020-10-13 09:31:04,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 09:31:04,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:04,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 09:31:04,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:31:04,477 INFO L87 Difference]: Start difference. First operand 7617 states and 9369 transitions. Second operand 22 states. [2020-10-13 09:31:04,669 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-13 09:31:04,899 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-10-13 09:31:05,156 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-10-13 09:31:05,404 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-13 09:31:05,688 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-13 09:31:06,047 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-13 09:31:06,420 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-13 09:31:06,798 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-13 09:31:07,147 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-13 09:31:07,527 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-10-13 09:31:07,831 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-13 09:31:08,145 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-13 09:31:08,383 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-13 09:31:08,687 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-13 09:31:08,921 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-13 09:31:09,080 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-13 09:31:09,554 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-13 09:31:09,797 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-10-13 09:31:10,117 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-10-13 09:31:10,375 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-13 09:31:10,678 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-10-13 09:31:11,064 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-13 09:31:11,253 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-13 09:31:11,651 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-13 09:31:12,141 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-13 09:31:12,497 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-10-13 09:31:12,959 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2020-10-13 09:31:13,273 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-10-13 09:31:13,597 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-13 09:31:13,878 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-13 09:31:14,207 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-13 09:31:14,408 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-13 09:31:14,795 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-13 09:31:17,853 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-13 09:31:18,422 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-13 09:31:18,753 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-13 09:31:19,066 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-10-13 09:31:22,520 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-13 09:31:22,825 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-13 09:31:25,258 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 09:31:26,113 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-13 09:31:26,750 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-13 09:31:27,063 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-10-13 09:31:28,699 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-13 09:31:30,186 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-13 09:31:30,401 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-10-13 09:31:32,059 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-13 09:31:32,323 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-10-13 09:31:33,417 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-13 09:31:33,790 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-13 09:31:34,159 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 09:31:34,887 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 09:31:35,385 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 09:31:38,095 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-13 09:31:44,994 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-13 09:31:45,243 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-13 09:31:45,842 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-10-13 09:31:46,282 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-13 09:31:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:50,062 INFO L93 Difference]: Finished difference Result 14808 states and 19761 transitions. [2020-10-13 09:31:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-13 09:31:50,065 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 199 [2020-10-13 09:31:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:50,119 INFO L225 Difference]: With dead ends: 14808 [2020-10-13 09:31:50,120 INFO L226 Difference]: Without dead ends: 8970 [2020-10-13 09:31:50,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1561, Invalid=5749, Unknown=0, NotChecked=0, Total=7310 [2020-10-13 09:31:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2020-10-13 09:31:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 7749. [2020-10-13 09:31:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7749 states. [2020-10-13 09:31:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7749 states to 7749 states and 9261 transitions. [2020-10-13 09:31:50,398 INFO L78 Accepts]: Start accepts. Automaton has 7749 states and 9261 transitions. Word has length 199 [2020-10-13 09:31:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:50,398 INFO L479 AbstractCegarLoop]: Abstraction has 7749 states and 9261 transitions. [2020-10-13 09:31:50,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 09:31:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7749 states and 9261 transitions. [2020-10-13 09:31:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 09:31:50,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:50,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:50,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:31:50,405 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1659258042, now seen corresponding path program 1 times [2020-10-13 09:31:50,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:50,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410175657] [2020-10-13 09:31:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:50,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:55,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:31:55,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:31:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:31:55,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:31:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:31:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:31:55,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:55,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:31:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:55,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:31:55,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:31:55,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:55,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:31:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:55,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:31:55,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:31:55,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:31:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:31:55,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410175657] [2020-10-13 09:31:55,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:55,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:31:55,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010537606] [2020-10-13 09:31:55,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:31:55,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:31:55,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:55,880 INFO L87 Difference]: Start difference. First operand 7749 states and 9261 transitions. Second operand 6 states. [2020-10-13 09:32:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:11,497 INFO L93 Difference]: Finished difference Result 13721 states and 16841 transitions. [2020-10-13 09:32:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:11,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2020-10-13 09:32:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:11,535 INFO L225 Difference]: With dead ends: 13721 [2020-10-13 09:32:11,536 INFO L226 Difference]: Without dead ends: 8192 [2020-10-13 09:32:11,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:32:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8192 states. [2020-10-13 09:32:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 8184. [2020-10-13 09:32:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8184 states. [2020-10-13 09:32:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 10017 transitions. [2020-10-13 09:32:11,808 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 10017 transitions. Word has length 212 [2020-10-13 09:32:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:11,809 INFO L479 AbstractCegarLoop]: Abstraction has 8184 states and 10017 transitions. [2020-10-13 09:32:11,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:32:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 10017 transitions. [2020-10-13 09:32:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 09:32:11,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:11,815 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:11,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:32:11,815 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1373992138, now seen corresponding path program 1 times [2020-10-13 09:32:11,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:11,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219287189] [2020-10-13 09:32:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking...