/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:38,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:38,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:38,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:38,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:38,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:38,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:38,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:38,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:38,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:38,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:38,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:38,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:38,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:38,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:38,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:38,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:38,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:38,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:38,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:38,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:38,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:38,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:38,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:38,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:38,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:38,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:38,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:38,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:38,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:38,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:38,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:38,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:38,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:38,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:38,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:38,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:38,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:38,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:38,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:38,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:38,669 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 [2020-09-25 04:31:38,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:38,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:38,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:38,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:38,699 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:38,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:38,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:38,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:38,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:38,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:38,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:38,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:38,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:38,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:38,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:38,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:38,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:38,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:38,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:38,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:38,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:38,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:38,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:38,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:38,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:38,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:38,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:38,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:38,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:38,706 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:31:39,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:39,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:39,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:39,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:39,168 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:39,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 04:31:39,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddc67d7a/1f97b32e605f4400bd2883a3febc2906/FLAG4df418eb2 [2020-09-25 04:31:39,906 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:39,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 04:31:39,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddc67d7a/1f97b32e605f4400bd2883a3febc2906/FLAG4df418eb2 [2020-09-25 04:31:40,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fddc67d7a/1f97b32e605f4400bd2883a3febc2906 [2020-09-25 04:31:40,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:40,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:40,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:40,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:40,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:40,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187f794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40, skipping insertion in model container [2020-09-25 04:31:40,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:40,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:40,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:40,951 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:41,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:41,123 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:41,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41 WrapperNode [2020-09-25 04:31:41,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:41,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:41,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:41,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:41,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (1/1) ... [2020-09-25 04:31:41,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:41,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:41,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:41,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:41,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (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 [2020-09-25 04:31:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:42,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:42,991 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:43,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:43 BoogieIcfgContainer [2020-09-25 04:31:43,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:43,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:43,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:43,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:43,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:40" (1/3) ... [2020-09-25 04:31:43,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390f4ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:43, skipping insertion in model container [2020-09-25 04:31:43,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:41" (2/3) ... [2020-09-25 04:31:43,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390f4ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:43, skipping insertion in model container [2020-09-25 04:31:43,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:43" (3/3) ... [2020-09-25 04:31:43,011 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 04:31:43,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:43,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:43,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:43,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:43,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:43,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:43,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:43,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:43,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:43,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:43,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 04:31:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:31:43,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:43,155 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] [2020-09-25 04:31:43,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:43,164 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 04:31:43,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:43,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753334528] [2020-09-25 04:31:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-09-25 04:31:44,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:44,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 04:31:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:44,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:44,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:31:44,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:44,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:44,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753334528] [2020-09-25 04:31:44,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:44,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:44,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892807187] [2020-09-25 04:31:44,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:44,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:44,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:44,316 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 04:31:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:47,063 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 04:31:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:47,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 04:31:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:47,093 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 04:31:47,093 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 04:31:47,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 04:31:47,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 04:31:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 04:31:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 04:31:47,237 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-25 04:31:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:47,239 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 04:31:47,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 04:31:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:31:47,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:47,259 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, 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] [2020-09-25 04:31:47,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:47,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:47,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:47,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-25 04:31:47,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:47,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520836747] [2020-09-25 04:31:47,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:52,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:31:52,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:31:52,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:52,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:31:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:52,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:52,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:52,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:52,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:31:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:52,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:52,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520836747] [2020-09-25 04:31:52,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:52,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:52,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365373757] [2020-09-25 04:31:52,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:52,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:52,646 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-25 04:31:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:55,326 INFO L93 Difference]: Finished difference Result 2007 states and 2506 transitions. [2020-09-25 04:31:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:55,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 04:31:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:55,334 INFO L225 Difference]: With dead ends: 2007 [2020-09-25 04:31:55,334 INFO L226 Difference]: Without dead ends: 1216 [2020-09-25 04:31:55,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-09-25 04:31:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1202. [2020-09-25 04:31:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-25 04:31:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1425 transitions. [2020-09-25 04:31:55,372 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1425 transitions. Word has length 146 [2020-09-25 04:31:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:55,373 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1425 transitions. [2020-09-25 04:31:55,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1425 transitions. [2020-09-25 04:31:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 04:31:55,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:55,378 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, 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] [2020-09-25 04:31:55,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:55,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash 149672492, now seen corresponding path program 1 times [2020-09-25 04:31:55,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:55,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878114122] [2020-09-25 04:31:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 04:32:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:32:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 04:32:00,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 04:32:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:32:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:00,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:00,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:32:00,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:32:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 04:32:00,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 04:32:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:32:00,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878114122] [2020-09-25 04:32:00,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:00,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:32:00,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88825984] [2020-09-25 04:32:00,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:32:00,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:00,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:32:00,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:32:00,913 INFO L87 Difference]: Start difference. First operand 1202 states and 1425 transitions. Second operand 5 states. [2020-09-25 04:32:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:03,556 INFO L93 Difference]: Finished difference Result 2809 states and 3463 transitions. [2020-09-25 04:32:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:32:03,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-09-25 04:32:03,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:03,568 INFO L225 Difference]: With dead ends: 2809 [2020-09-25 04:32:03,568 INFO L226 Difference]: Without dead ends: 1811 [2020-09-25 04:32:03,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:32:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-09-25 04:32:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1775. [2020-09-25 04:32:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2020-09-25 04:32:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2128 transitions. [2020-09-25 04:32:03,633 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2128 transitions. Word has length 216 [2020-09-25 04:32:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:03,635 INFO L479 AbstractCegarLoop]: Abstraction has 1775 states and 2128 transitions. [2020-09-25 04:32:03,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:32:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2128 transitions. [2020-09-25 04:32:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 04:32:03,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:03,640 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:03,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:32:03,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1124649340, now seen corresponding path program 1 times [2020-09-25 04:32:03,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:03,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212467044] [2020-09-25 04:32:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:08,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:08,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 04:32:08,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:32:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:32:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:08,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:32:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:32:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:32:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:08,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:08,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:32:08,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:08,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:08,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:08,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:32:08,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 04:32:08,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:08,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:32:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:32:08,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:32:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:09,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:09,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:09,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:09,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 04:32:09,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:09,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:09,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:09,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:09,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:09,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212467044] [2020-09-25 04:32:09,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:09,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:32:09,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873193561] [2020-09-25 04:32:09,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:32:09,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:09,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:32:09,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:32:09,435 INFO L87 Difference]: Start difference. First operand 1775 states and 2128 transitions. Second operand 7 states. [2020-09-25 04:32:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:13,003 INFO L93 Difference]: Finished difference Result 3699 states and 4571 transitions. [2020-09-25 04:32:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:32:13,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-25 04:32:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:13,018 INFO L225 Difference]: With dead ends: 3699 [2020-09-25 04:32:13,018 INFO L226 Difference]: Without dead ends: 2128 [2020-09-25 04:32:13,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:32:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2020-09-25 04:32:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2022. [2020-09-25 04:32:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2020-09-25 04:32:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2423 transitions. [2020-09-25 04:32:13,099 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2423 transitions. Word has length 240 [2020-09-25 04:32:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:13,100 INFO L479 AbstractCegarLoop]: Abstraction has 2022 states and 2423 transitions. [2020-09-25 04:32:13,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:32:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2423 transitions. [2020-09-25 04:32:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 04:32:13,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:13,105 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:13,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:32:13,106 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:13,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1365263247, now seen corresponding path program 1 times [2020-09-25 04:32:13,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:13,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686185199] [2020-09-25 04:32:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:18,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:18,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 04:32:18,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:32:18,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:32:18,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:18,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:18,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:32:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:32:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:32:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:18,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:18,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:32:18,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:18,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:32:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:18,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 04:32:18,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 04:32:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:18,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:32:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:32:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 04:32:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:18,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:18,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 04:32:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:18,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:18,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686185199] [2020-09-25 04:32:18,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:18,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:32:18,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943860790] [2020-09-25 04:32:18,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:32:18,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:18,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:32:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:32:18,758 INFO L87 Difference]: Start difference. First operand 2022 states and 2423 transitions. Second operand 8 states. [2020-09-25 04:32:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:22,944 INFO L93 Difference]: Finished difference Result 5041 states and 6181 transitions. [2020-09-25 04:32:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:32:22,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 04:32:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:22,964 INFO L225 Difference]: With dead ends: 5041 [2020-09-25 04:32:22,964 INFO L226 Difference]: Without dead ends: 3223 [2020-09-25 04:32:22,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:32:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2020-09-25 04:32:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3163. [2020-09-25 04:32:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-09-25 04:32:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 3732 transitions. [2020-09-25 04:32:23,046 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 3732 transitions. Word has length 249 [2020-09-25 04:32:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:23,047 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 3732 transitions. [2020-09-25 04:32:23,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:32:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 3732 transitions. [2020-09-25 04:32:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-25 04:32:23,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:23,054 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:23,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:23,054 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:23,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1040221153, now seen corresponding path program 1 times [2020-09-25 04:32:23,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:23,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640774535] [2020-09-25 04:32:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking...