/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:46:36,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:46:36,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:46:36,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:46:36,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:46:36,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:46:36,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:46:36,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:46:36,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:46:36,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:46:36,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:46:36,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:46:36,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:46:36,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:46:36,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:46:36,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:46:36,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:46:36,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:46:36,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:46:36,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:46:36,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:46:36,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:46:36,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:46:36,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:46:36,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:46:36,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:46:36,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:46:36,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:46:36,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:46:36,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:46:36,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:46:36,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:46:36,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:46:36,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:46:36,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:46:36,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:46:36,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:46:36,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:46:36,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:46:36,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:46:36,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:46:36,867 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 [2020-10-14 00:46:36,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:46:36,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:46:36,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:46:36,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:46:36,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:46:36,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:46:36,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:46:36,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:46:36,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:46:36,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:46:36,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:46:36,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:46:36,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:46:36,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:46:36,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:46:36,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:46:36,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:46:36,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:46:36,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:46:36,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:46:36,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:46:36,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:46:36,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:46:36,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:46:36,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:46:36,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:46:36,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:46:36,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:46:36,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:46:36,921 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:46:37,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:46:37,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:46:37,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:46:37,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:46:37,236 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:46:37,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01.c [2020-10-14 00:46:37,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bab6b0837/7f23210b2df746af9daba37311684a90/FLAG5f1dd46d7 [2020-10-14 00:46:38,001 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:46:38,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label01.c [2020-10-14 00:46:38,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bab6b0837/7f23210b2df746af9daba37311684a90/FLAG5f1dd46d7 [2020-10-14 00:46:38,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bab6b0837/7f23210b2df746af9daba37311684a90 [2020-10-14 00:46:38,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:46:38,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:46:38,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:46:38,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:46:38,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:46:38,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:46:38" (1/1) ... [2020-10-14 00:46:38,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:38, skipping insertion in model container [2020-10-14 00:46:38,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:46:38" (1/1) ... [2020-10-14 00:46:38,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:46:38,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:46:39,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:46:39,123 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:46:39,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:46:39,512 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:46:39,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39 WrapperNode [2020-10-14 00:46:39,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:46:39,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:46:39,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:46:39,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:46:39,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:46:39,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:46:39,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:46:39,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:46:39,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (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 [2020-10-14 00:46:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:46:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:46:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:46:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:46:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:46:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:46:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:46:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:46:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:46:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:46:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:46:41,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:46:41,864 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:46:41,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:46:41 BoogieIcfgContainer [2020-10-14 00:46:41,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:46:41,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:46:41,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:46:41,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:46:41,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:46:38" (1/3) ... [2020-10-14 00:46:41,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8f193a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:46:41, skipping insertion in model container [2020-10-14 00:46:41,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (2/3) ... [2020-10-14 00:46:41,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8f193a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:46:41, skipping insertion in model container [2020-10-14 00:46:41,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:46:41" (3/3) ... [2020-10-14 00:46:41,883 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label01.c [2020-10-14 00:46:41,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:46:41,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:46:41,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:46:41,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:46:41,947 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:46:41,947 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:46:41,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:46:41,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:46:41,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:46:41,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:46:41,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:46:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:46:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 00:46:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:41,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:46:41,992 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash 728894733, now seen corresponding path program 1 times [2020-10-14 00:46:42,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:42,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811245197] [2020-10-14 00:46:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:47,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:47,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 00:46:47,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:46:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4707 [2020-10-14 00:46:47,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:47,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:46:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:46:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 00:46:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:46:47,606 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:46:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:46:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:47,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:47,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:46:47,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:46:47,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:46:47,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:47,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:46:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:46:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:46:47,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:46:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:46:47,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811245197] [2020-10-14 00:46:47,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:46:47,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:46:47,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347018037] [2020-10-14 00:46:47,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:46:47,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:46:47,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:46:47,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:46:47,772 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:46:47,999 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:46:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:46:51,179 INFO L93 Difference]: Finished difference Result 884 states and 1536 transitions. [2020-10-14 00:46:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:46:51,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2020-10-14 00:46:51,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:46:51,210 INFO L225 Difference]: With dead ends: 884 [2020-10-14 00:46:51,211 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 00:46:51,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:46:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 00:46:51,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-14 00:46:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 00:46:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 728 transitions. [2020-10-14 00:46:51,312 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 728 transitions. Word has length 192 [2020-10-14 00:46:51,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:46:51,313 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 728 transitions. [2020-10-14 00:46:51,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:46:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 728 transitions. [2020-10-14 00:46:51,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 00:46:51,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:51,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:46:51,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:46:51,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:51,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1119773802, now seen corresponding path program 1 times [2020-10-14 00:46:51,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:51,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11332800] [2020-10-14 00:46:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:53,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:53,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 00:46:53,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:46:53,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2342 [2020-10-14 00:46:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:53,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:46:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:46:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 00:46:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:54,167 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:46:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:46:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:54,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:54,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:46:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:46:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:46:54,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:54,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:46:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:46:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:46:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:54,353 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:46:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:46:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:54,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:54,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:46:54,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:46:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:46:54,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:54,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:46:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:46:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:46:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:46:54,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11332800] [2020-10-14 00:46:54,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:46:54,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:46:54,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229196758] [2020-10-14 00:46:54,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:46:54,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:46:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:46:54,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:46:54,579 INFO L87 Difference]: Start difference. First operand 475 states and 728 transitions. Second operand 7 states. [2020-10-14 00:46:54,867 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:46:57,779 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:46:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:46:58,549 INFO L93 Difference]: Finished difference Result 1430 states and 2223 transitions. [2020-10-14 00:46:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:46:58,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-14 00:46:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:46:58,557 INFO L225 Difference]: With dead ends: 1430 [2020-10-14 00:46:58,558 INFO L226 Difference]: Without dead ends: 961 [2020-10-14 00:46:58,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:46:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-14 00:46:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 940. [2020-10-14 00:46:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-14 00:46:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1377 transitions. [2020-10-14 00:46:58,621 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1377 transitions. Word has length 201 [2020-10-14 00:46:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:46:58,621 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1377 transitions. [2020-10-14 00:46:58,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:46:58,621 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1377 transitions. [2020-10-14 00:46:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 00:46:58,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:58,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:46:58,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:46:58,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash 909282937, now seen corresponding path program 1 times [2020-10-14 00:46:58,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:58,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231423376] [2020-10-14 00:46:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:00,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:02,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:02,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 00:47:02,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3406 [2020-10-14 00:47:02,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:02,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:47:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 00:47:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:02,468 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:02,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:02,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:02,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:47:02,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:02,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:02,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:47:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:47:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:02,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:02,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231423376] [2020-10-14 00:47:02,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:02,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:02,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111900651] [2020-10-14 00:47:02,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:02,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:02,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:02,709 INFO L87 Difference]: Start difference. First operand 940 states and 1377 transitions. Second operand 5 states. [2020-10-14 00:47:02,887 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:05,645 INFO L93 Difference]: Finished difference Result 2756 states and 4126 transitions. [2020-10-14 00:47:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:05,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-14 00:47:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:05,656 INFO L225 Difference]: With dead ends: 2756 [2020-10-14 00:47:05,656 INFO L226 Difference]: Without dead ends: 1822 [2020-10-14 00:47:05,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-10-14 00:47:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1787. [2020-10-14 00:47:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1787 states. [2020-10-14 00:47:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2617 transitions. [2020-10-14 00:47:05,724 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2617 transitions. Word has length 204 [2020-10-14 00:47:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:05,725 INFO L479 AbstractCegarLoop]: Abstraction has 1787 states and 2617 transitions. [2020-10-14 00:47:05,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2617 transitions. [2020-10-14 00:47:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 00:47:05,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:05,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:05,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:47:05,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2019432546, now seen corresponding path program 1 times [2020-10-14 00:47:05,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:05,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206112503] [2020-10-14 00:47:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:10,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:10,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 00:47:10,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:47:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:47:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:11,018 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:11,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:11,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:11,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:11,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:11,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:11,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:47:11,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 00:47:11,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:11,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:47:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:11,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:47:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:11,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:11,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:11,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:47:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:11,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:47:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:47:11,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206112503] [2020-10-14 00:47:11,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:11,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:47:11,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337494793] [2020-10-14 00:47:11,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:11,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:11,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:11,392 INFO L87 Difference]: Start difference. First operand 1787 states and 2617 transitions. Second operand 7 states. [2020-10-14 00:47:11,839 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:12,207 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:16,977 INFO L93 Difference]: Finished difference Result 7195 states and 12041 transitions. [2020-10-14 00:47:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:47:16,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-14 00:47:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:17,026 INFO L225 Difference]: With dead ends: 7195 [2020-10-14 00:47:17,027 INFO L226 Difference]: Without dead ends: 5414 [2020-10-14 00:47:17,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:47:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2020-10-14 00:47:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5370. [2020-10-14 00:47:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5370 states. [2020-10-14 00:47:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 8264 transitions. [2020-10-14 00:47:17,309 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 8264 transitions. Word has length 215 [2020-10-14 00:47:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:17,309 INFO L479 AbstractCegarLoop]: Abstraction has 5370 states and 8264 transitions. [2020-10-14 00:47:17,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:47:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 8264 transitions. [2020-10-14 00:47:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 00:47:17,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:17,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:17,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:47:17,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:17,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2040487875, now seen corresponding path program 1 times [2020-10-14 00:47:17,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:17,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600018146] [2020-10-14 00:47:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:22,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 00:47:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:47:22,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:22,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:47:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:47:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:22,624 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:22,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:22,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:47:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:22,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:22,774 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:47:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:22,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:47:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:47:22,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:22,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:47:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:47:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:47:22,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:22,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:47:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:47:22,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600018146] [2020-10-14 00:47:22,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:22,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:47:22,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788332336] [2020-10-14 00:47:22,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:47:22,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:47:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:47:22,971 INFO L87 Difference]: Start difference. First operand 5370 states and 8264 transitions. Second operand 8 states. [2020-10-14 00:47:23,164 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:23,932 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:24,360 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:28,104 INFO L93 Difference]: Finished difference Result 20157 states and 35174 transitions. [2020-10-14 00:47:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:47:28,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-14 00:47:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:28,230 INFO L225 Difference]: With dead ends: 20157 [2020-10-14 00:47:28,230 INFO L226 Difference]: Without dead ends: 14793 [2020-10-14 00:47:28,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:47:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14793 states. [2020-10-14 00:47:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14793 to 14613. [2020-10-14 00:47:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14613 states. [2020-10-14 00:47:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14613 states to 14613 states and 22809 transitions. [2020-10-14 00:47:29,080 INFO L78 Accepts]: Start accepts. Automaton has 14613 states and 22809 transitions. Word has length 218 [2020-10-14 00:47:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:29,080 INFO L479 AbstractCegarLoop]: Abstraction has 14613 states and 22809 transitions. [2020-10-14 00:47:29,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:47:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 14613 states and 22809 transitions. [2020-10-14 00:47:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 00:47:29,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:29,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:29,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:47:29,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1169143139, now seen corresponding path program 1 times [2020-10-14 00:47:29,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:29,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461068108] [2020-10-14 00:47:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:32,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:32,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 00:47:32,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3556 [2020-10-14 00:47:32,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:32,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:47:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-14 00:47:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:33,090 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:33,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:33,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:47:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:47:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:47:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 00:47:33,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:33,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:47:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:47:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:47:33,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461068108] [2020-10-14 00:47:33,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:33,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:47:33,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390205025] [2020-10-14 00:47:33,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:47:33,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:33,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:47:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:47:33,617 INFO L87 Difference]: Start difference. First operand 14613 states and 22809 transitions. Second operand 9 states. [2020-10-14 00:47:33,875 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:34,130 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:35,182 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:39,885 INFO L93 Difference]: Finished difference Result 45059 states and 75091 transitions. [2020-10-14 00:47:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:47:39,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 238 [2020-10-14 00:47:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:40,065 INFO L225 Difference]: With dead ends: 45059 [2020-10-14 00:47:40,066 INFO L226 Difference]: Without dead ends: 30452 [2020-10-14 00:47:40,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:47:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30452 states. [2020-10-14 00:47:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30452 to 29039. [2020-10-14 00:47:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29039 states. [2020-10-14 00:47:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29039 states to 29039 states and 45572 transitions. [2020-10-14 00:47:42,185 INFO L78 Accepts]: Start accepts. Automaton has 29039 states and 45572 transitions. Word has length 238 [2020-10-14 00:47:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:42,187 INFO L479 AbstractCegarLoop]: Abstraction has 29039 states and 45572 transitions. [2020-10-14 00:47:42,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:47:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 29039 states and 45572 transitions. [2020-10-14 00:47:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 00:47:42,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:42,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:42,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:47:42,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:42,320 INFO L82 PathProgramCache]: Analyzing trace with hash 89362555, now seen corresponding path program 1 times [2020-10-14 00:47:42,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:42,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310730877] [2020-10-14 00:47:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 00:47:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-14 00:47:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:44,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:47:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 00:47:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:44,237 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:44,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:44,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:44,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:47:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:44,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:44,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:44,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:47:44,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:44,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310730877] [2020-10-14 00:47:44,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:44,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:47:44,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207786050] [2020-10-14 00:47:44,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:47:44,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:47:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:44,514 INFO L87 Difference]: Start difference. First operand 29039 states and 45572 transitions. Second operand 6 states. [2020-10-14 00:47:44,694 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:45,132 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:49,303 INFO L93 Difference]: Finished difference Result 100395 states and 160335 transitions. [2020-10-14 00:47:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:47:49,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2020-10-14 00:47:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:49,705 INFO L225 Difference]: With dead ends: 100395 [2020-10-14 00:47:49,706 INFO L226 Difference]: Without dead ends: 71462 [2020-10-14 00:47:49,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:47:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71462 states. [2020-10-14 00:47:53,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71462 to 63971. [2020-10-14 00:47:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63971 states. [2020-10-14 00:47:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63971 states to 63971 states and 104442 transitions. [2020-10-14 00:47:54,140 INFO L78 Accepts]: Start accepts. Automaton has 63971 states and 104442 transitions. Word has length 237 [2020-10-14 00:47:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:54,141 INFO L479 AbstractCegarLoop]: Abstraction has 63971 states and 104442 transitions. [2020-10-14 00:47:54,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:47:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 63971 states and 104442 transitions. [2020-10-14 00:47:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 00:47:54,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:54,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:54,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:47:54,386 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:54,387 INFO L82 PathProgramCache]: Analyzing trace with hash 605202765, now seen corresponding path program 1 times [2020-10-14 00:47:54,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:54,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188639884] [2020-10-14 00:47:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 00:47:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 00:47:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:59,861 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:59,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:59,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:59,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:59,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:48:00,029 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:48:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:00,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:00,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:00,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:48:00,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:00,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:00,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:00,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:00,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:48:00,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:00,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:00,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:48:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:00,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:00,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:48:00,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 00:48:00,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:00,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:48:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-14 00:48:00,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188639884] [2020-10-14 00:48:00,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:00,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:00,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889837976] [2020-10-14 00:48:00,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:00,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:00,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:00,797 INFO L87 Difference]: Start difference. First operand 63971 states and 104442 transitions. Second operand 5 states. [2020-10-14 00:48:00,982 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:04,230 INFO L93 Difference]: Finished difference Result 127734 states and 206046 transitions. [2020-10-14 00:48:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:04,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-14 00:48:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:04,595 INFO L225 Difference]: With dead ends: 127734 [2020-10-14 00:48:04,595 INFO L226 Difference]: Without dead ends: 63997 [2020-10-14 00:48:04,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:04,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63997 states. [2020-10-14 00:48:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63997 to 63971. [2020-10-14 00:48:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63971 states. [2020-10-14 00:48:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63971 states to 63971 states and 102679 transitions. [2020-10-14 00:48:07,477 INFO L78 Accepts]: Start accepts. Automaton has 63971 states and 102679 transitions. Word has length 264 [2020-10-14 00:48:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:07,478 INFO L479 AbstractCegarLoop]: Abstraction has 63971 states and 102679 transitions. [2020-10-14 00:48:07,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:07,478 INFO L276 IsEmpty]: Start isEmpty. Operand 63971 states and 102679 transitions. [2020-10-14 00:48:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 00:48:07,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:07,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:07,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:48:07,659 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:07,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1944623212, now seen corresponding path program 1 times [2020-10-14 00:48:07,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:07,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493211872] [2020-10-14 00:48:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3473 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 00:48:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,538 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:48:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:48:11,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:48:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 00:48:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:48:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:48:11,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493211872] [2020-10-14 00:48:11,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:11,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:11,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876889158] [2020-10-14 00:48:11,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:11,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:11,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:11,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:11,994 INFO L87 Difference]: Start difference. First operand 63971 states and 102679 transitions. Second operand 5 states. [2020-10-14 00:48:12,166 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:15,489 INFO L93 Difference]: Finished difference Result 151032 states and 243009 transitions. [2020-10-14 00:48:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:15,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 291 [2020-10-14 00:48:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:15,878 INFO L225 Difference]: With dead ends: 151032 [2020-10-14 00:48:15,878 INFO L226 Difference]: Without dead ends: 87067 [2020-10-14 00:48:16,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87067 states. [2020-10-14 00:48:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87067 to 83474. [2020-10-14 00:48:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83474 states. [2020-10-14 00:48:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83474 states to 83474 states and 130866 transitions. [2020-10-14 00:48:18,395 INFO L78 Accepts]: Start accepts. Automaton has 83474 states and 130866 transitions. Word has length 291 [2020-10-14 00:48:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:18,396 INFO L479 AbstractCegarLoop]: Abstraction has 83474 states and 130866 transitions. [2020-10-14 00:48:18,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 83474 states and 130866 transitions. [2020-10-14 00:48:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 00:48:18,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:18,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:18,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:48:18,596 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1693687182, now seen corresponding path program 1 times [2020-10-14 00:48:18,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:18,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214404490] [2020-10-14 00:48:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 00:48:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 00:48:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:22,890 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:23,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:23,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:48:23,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 00:48:23,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:23,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:48:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:48:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:23,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:48:23,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:23,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214404490] [2020-10-14 00:48:23,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:23,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:48:23,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037394443] [2020-10-14 00:48:23,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:48:23,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:23,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:48:23,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:48:23,597 INFO L87 Difference]: Start difference. First operand 83474 states and 130866 transitions. Second operand 8 states. [2020-10-14 00:48:23,796 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:24,318 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:27,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:27,983 INFO L93 Difference]: Finished difference Result 169957 states and 255128 transitions. [2020-10-14 00:48:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:48:27,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 294 [2020-10-14 00:48:27,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:28,236 INFO L225 Difference]: With dead ends: 169957 [2020-10-14 00:48:28,236 INFO L226 Difference]: Without dead ends: 86697 [2020-10-14 00:48:28,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86697 states. [2020-10-14 00:48:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86697 to 86415. [2020-10-14 00:48:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86415 states. [2020-10-14 00:48:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86415 states to 86415 states and 114326 transitions. [2020-10-14 00:48:30,380 INFO L78 Accepts]: Start accepts. Automaton has 86415 states and 114326 transitions. Word has length 294 [2020-10-14 00:48:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:30,380 INFO L479 AbstractCegarLoop]: Abstraction has 86415 states and 114326 transitions. [2020-10-14 00:48:30,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:48:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 86415 states and 114326 transitions. [2020-10-14 00:48:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 00:48:30,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:30,471 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:30,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:48:30,471 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:30,471 INFO L82 PathProgramCache]: Analyzing trace with hash 655623786, now seen corresponding path program 1 times [2020-10-14 00:48:30,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:30,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213938574] [2020-10-14 00:48:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:35,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 00:48:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:48:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 00:48:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:35,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:48:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:48:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:35,739 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:35,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:35,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:48:35,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:35,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:35,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:35,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:35,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:48:35,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:35,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:48:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:35,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:35,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:35,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 00:48:35,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:35,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:48:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:48:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:48:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:36,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:48:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:36,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:48:36,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:48:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:36,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:48:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 131 proven. 35 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 00:48:36,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213938574] [2020-10-14 00:48:36,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:36,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:36,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619866428] [2020-10-14 00:48:36,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:36,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:36,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:36,190 INFO L87 Difference]: Start difference. First operand 86415 states and 114326 transitions. Second operand 7 states. [2020-10-14 00:48:36,369 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:40,258 INFO L93 Difference]: Finished difference Result 235660 states and 312929 transitions. [2020-10-14 00:48:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:48:40,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-14 00:48:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:40,690 INFO L225 Difference]: With dead ends: 235660 [2020-10-14 00:48:40,690 INFO L226 Difference]: Without dead ends: 149251 [2020-10-14 00:48:40,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:48:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149251 states. [2020-10-14 00:48:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149251 to 149233. [2020-10-14 00:48:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149233 states. [2020-10-14 00:48:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149233 states to 149233 states and 198512 transitions. [2020-10-14 00:48:43,527 INFO L78 Accepts]: Start accepts. Automaton has 149233 states and 198512 transitions. Word has length 311 [2020-10-14 00:48:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:43,527 INFO L479 AbstractCegarLoop]: Abstraction has 149233 states and 198512 transitions. [2020-10-14 00:48:43,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 149233 states and 198512 transitions. [2020-10-14 00:48:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 00:48:43,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:43,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:43,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:48:43,697 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1929638444, now seen corresponding path program 1 times [2020-10-14 00:48:43,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:43,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509888388] [2020-10-14 00:48:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:47,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 00:48:47,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3923 [2020-10-14 00:48:47,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:48:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 00:48:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,904 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:47,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:47,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:48:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:48,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 00:48:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:48,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509888388] [2020-10-14 00:48:48,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:48,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:48,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119023464] [2020-10-14 00:48:48,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:48,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:48,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:48,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:48,500 INFO L87 Difference]: Start difference. First operand 149233 states and 198512 transitions. Second operand 7 states. [2020-10-14 00:48:48,688 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:53,331 INFO L93 Difference]: Finished difference Result 288338 states and 383362 transitions. [2020-10-14 00:48:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:53,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-14 00:48:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:53,715 INFO L225 Difference]: With dead ends: 288338 [2020-10-14 00:48:53,715 INFO L226 Difference]: Without dead ends: 139111 [2020-10-14 00:48:53,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:48:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139111 states. [2020-10-14 00:48:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139111 to 139101. [2020-10-14 00:48:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139101 states. [2020-10-14 00:48:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139101 states to 139101 states and 182031 transitions. [2020-10-14 00:48:56,577 INFO L78 Accepts]: Start accepts. Automaton has 139101 states and 182031 transitions. Word has length 310 [2020-10-14 00:48:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:56,578 INFO L479 AbstractCegarLoop]: Abstraction has 139101 states and 182031 transitions. [2020-10-14 00:48:56,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 139101 states and 182031 transitions. [2020-10-14 00:48:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 00:48:56,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:56,688 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:56,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:48:56,688 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:56,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2124636370, now seen corresponding path program 1 times [2020-10-14 00:48:56,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:56,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831302069] [2020-10-14 00:48:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:56,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:01,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-14 00:49:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:49:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:49:01,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:01,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:49:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:49:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:02,005 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:02,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:02,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:02,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:49:02,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 00:49:02,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:02,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 00:49:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:49:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:49:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:02,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:49:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:02,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:49:02,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 185 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 00:49:02,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831302069] [2020-10-14 00:49:02,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:02,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:02,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146369374] [2020-10-14 00:49:02,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:02,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:02,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:02,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:02,470 INFO L87 Difference]: Start difference. First operand 139101 states and 182031 transitions. Second operand 7 states. [2020-10-14 00:49:02,650 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:07,857 INFO L93 Difference]: Finished difference Result 398959 states and 542041 transitions. [2020-10-14 00:49:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:49:07,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-14 00:49:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:08,839 INFO L225 Difference]: With dead ends: 398959 [2020-10-14 00:49:08,840 INFO L226 Difference]: Without dead ends: 259864 [2020-10-14 00:49:08,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:49:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259864 states. [2020-10-14 00:49:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259864 to 256176. [2020-10-14 00:49:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256176 states. [2020-10-14 00:49:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256176 states to 256176 states and 336998 transitions. [2020-10-14 00:49:17,862 INFO L78 Accepts]: Start accepts. Automaton has 256176 states and 336998 transitions. Word has length 367 [2020-10-14 00:49:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:17,863 INFO L479 AbstractCegarLoop]: Abstraction has 256176 states and 336998 transitions. [2020-10-14 00:49:17,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 256176 states and 336998 transitions. [2020-10-14 00:49:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 00:49:18,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:18,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:49:18,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:49:18,052 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2083671801, now seen corresponding path program 1 times [2020-10-14 00:49:18,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:18,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247697232] [2020-10-14 00:49:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:23,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 00:49:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:49:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:49:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:23,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-14 00:49:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:49:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:23,332 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:23,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:23,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:23,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:23,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:23,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:49:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:49:23,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 00:49:23,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:23,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 00:49:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 00:49:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:49:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 00:49:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:23,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:49:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:49:23,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:23,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:49:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 183 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:49:23,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247697232] [2020-10-14 00:49:23,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:23,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:23,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046437054] [2020-10-14 00:49:23,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:23,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:23,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:23,833 INFO L87 Difference]: Start difference. First operand 256176 states and 336998 transitions. Second operand 7 states. [2020-10-14 00:49:24,650 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:49:25,098 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:38,061 INFO L93 Difference]: Finished difference Result 719366 states and 1062176 transitions. [2020-10-14 00:49:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:38,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-14 00:49:38,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:40,750 INFO L225 Difference]: With dead ends: 719366 [2020-10-14 00:49:40,750 INFO L226 Difference]: Without dead ends: 463196 [2020-10-14 00:49:41,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:49:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463196 states.