/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=1.0 --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/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:23,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:23,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:23,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:23,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:23,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:23,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:23,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:23,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:23,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:23,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:23,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:23,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:23,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:23,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:23,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:23,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:23,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:23,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:23,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:23,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:23,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:23,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:23,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:23,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:23,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:23,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:23,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:23,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:23,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:23,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:23,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:23,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:23,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:23,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:23,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:23,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:23,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:23,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:23,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:23,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:23,600 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 09:04:23,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:23,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:23,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:23,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:23,651 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:23,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:23,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:23,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:23,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:23,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:23,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:23,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:23,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:23,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:23,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:23,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:23,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:23,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:23,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:23,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:23,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:23,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:23,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:23,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:23,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:23,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:23,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:23,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:23,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:23,658 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:04:24,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:24,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:24,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:24,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:24,152 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:24,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 09:04:24,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/718a9e8e7/51d83a071df14e61bddd2c21373c2379/FLAGf98d8faff [2020-09-25 09:04:24,866 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:24,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 09:04:24,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/718a9e8e7/51d83a071df14e61bddd2c21373c2379/FLAGf98d8faff [2020-09-25 09:04:25,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/718a9e8e7/51d83a071df14e61bddd2c21373c2379 [2020-09-25 09:04:25,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:25,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:25,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:25,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:25,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:25,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:25,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ad3e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25, skipping insertion in model container [2020-09-25 09:04:25,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:25,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:25,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:25,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:25,620 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:25,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:25,937 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:25,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25 WrapperNode [2020-09-25 09:04:25,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:25,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:25,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:25,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:25,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:25,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:25,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:25,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:26,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:26,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:26,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (1/1) ... [2020-09-25 09:04:26,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:26,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:26,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:26,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:26,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (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 09:04:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:27,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:27,892 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:27,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:27 BoogieIcfgContainer [2020-09-25 09:04:27,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:27,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:27,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:27,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:27,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:25" (1/3) ... [2020-09-25 09:04:27,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f82bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:27, skipping insertion in model container [2020-09-25 09:04:27,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:25" (2/3) ... [2020-09-25 09:04:27,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f82bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:27, skipping insertion in model container [2020-09-25 09:04:27,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:27" (3/3) ... [2020-09-25 09:04:27,910 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 09:04:27,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:27,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:27,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:27,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:27,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:27,991 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:27,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:27,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:27,992 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:27,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:27,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:04:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 09:04:28,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:28,052 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] [2020-09-25 09:04:28,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 09:04:28,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:28,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722762836] [2020-09-25 09:04:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 09:04:33,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:04:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:33,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:04:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:04:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:33,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:33,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:04:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:33,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:04:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:33,669 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 09:04:33,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722762836] [2020-09-25 09:04:33,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:33,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:33,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772769025] [2020-09-25 09:04:33,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:33,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:33,703 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:36,045 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 09:04:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:36,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 09:04:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:36,075 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 09:04:36,075 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 09:04:36,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 09:04:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 09:04:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 09:04:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 09:04:36,189 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 09:04:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:36,191 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 09:04:36,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 09:04:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 09:04:36,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:36,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:36,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:36,200 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:36,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 09:04:36,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:36,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538186183] [2020-09-25 09:04:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 09:04:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:04:41,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:41,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 09:04:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:41,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:04:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:41,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:41,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:41,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:04:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:41,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:04:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:41,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538186183] [2020-09-25 09:04:41,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:41,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:41,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333012963] [2020-09-25 09:04:41,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:41,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:41,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:41,620 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 6 states. [2020-09-25 09:04:43,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:43,879 INFO L93 Difference]: Finished difference Result 1724 states and 2056 transitions. [2020-09-25 09:04:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:43,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 09:04:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:43,892 INFO L225 Difference]: With dead ends: 1724 [2020-09-25 09:04:43,893 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 09:04:43,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 09:04:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1051. [2020-09-25 09:04:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-09-25 09:04:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1236 transitions. [2020-09-25 09:04:43,979 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1236 transitions. Word has length 166 [2020-09-25 09:04:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:43,981 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1236 transitions. [2020-09-25 09:04:43,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:43,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1236 transitions. [2020-09-25 09:04:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 09:04:43,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:43,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:43,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:43,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 09:04:43,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:43,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606095970] [2020-09-25 09:04:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:49,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 09:04:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:04:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:04:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:49,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 09:04:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:04:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:49,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:49,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:04:49,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:49,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:49,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:49,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:49,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:04:49,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:49,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:49,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:04:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:04:49,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:49,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:04:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:04:49,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606095970] [2020-09-25 09:04:49,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:49,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:49,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821189303] [2020-09-25 09:04:49,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:49,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:49,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:49,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:49,572 INFO L87 Difference]: Start difference. First operand 1051 states and 1236 transitions. Second operand 8 states. [2020-09-25 09:04:53,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:53,452 INFO L93 Difference]: Finished difference Result 3211 states and 4131 transitions. [2020-09-25 09:04:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:04:53,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 09:04:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:53,466 INFO L225 Difference]: With dead ends: 3211 [2020-09-25 09:04:53,466 INFO L226 Difference]: Without dead ends: 1983 [2020-09-25 09:04:53,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-09-25 09:04:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1958. [2020-09-25 09:04:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 09:04:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2273 transitions. [2020-09-25 09:04:53,574 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2273 transitions. Word has length 184 [2020-09-25 09:04:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:53,575 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2273 transitions. [2020-09-25 09:04:53,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2273 transitions. [2020-09-25 09:04:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 09:04:53,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:53,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:53,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:53,587 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:53,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 09:04:53,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:53,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316367939] [2020-09-25 09:04:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 09:04:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:04:58,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:58,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 09:04:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 09:04:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:58,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:58,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:58,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:58,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:58,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 09:04:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 09:04:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:04:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:58,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316367939] [2020-09-25 09:04:58,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:58,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:58,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729364377] [2020-09-25 09:04:58,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:58,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:58,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:58,992 INFO L87 Difference]: Start difference. First operand 1958 states and 2273 transitions. Second operand 5 states. [2020-09-25 09:05:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:01,358 INFO L93 Difference]: Finished difference Result 5256 states and 6280 transitions. [2020-09-25 09:05:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:01,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 09:05:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:01,374 INFO L225 Difference]: With dead ends: 5256 [2020-09-25 09:05:01,375 INFO L226 Difference]: Without dead ends: 3010 [2020-09-25 09:05:01,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-09-25 09:05:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2887. [2020-09-25 09:05:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2020-09-25 09:05:01,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3410 transitions. [2020-09-25 09:05:01,474 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3410 transitions. Word has length 191 [2020-09-25 09:05:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:01,475 INFO L479 AbstractCegarLoop]: Abstraction has 2887 states and 3410 transitions. [2020-09-25 09:05:01,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3410 transitions. [2020-09-25 09:05:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 09:05:01,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:01,487 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:01,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:01,488 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -755789642, now seen corresponding path program 1 times [2020-09-25 09:05:01,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:01,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351151082] [2020-09-25 09:05:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 09:05:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:05:06,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:06,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:05:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:05:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:06,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:05:06,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:06,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:05:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:05:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:05:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:05:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:05:06,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:06,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:05:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:05:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:06,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:05:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:05:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:05:06,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351151082] [2020-09-25 09:05:06,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:06,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:06,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040535010] [2020-09-25 09:05:06,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:06,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:06,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:06,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:06,891 INFO L87 Difference]: Start difference. First operand 2887 states and 3410 transitions. Second operand 8 states. [2020-09-25 09:05:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:09,390 INFO L93 Difference]: Finished difference Result 5988 states and 7206 transitions. [2020-09-25 09:05:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:05:09,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-09-25 09:05:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:09,408 INFO L225 Difference]: With dead ends: 5988 [2020-09-25 09:05:09,409 INFO L226 Difference]: Without dead ends: 3123 [2020-09-25 09:05:09,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:05:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2020-09-25 09:05:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 2913. [2020-09-25 09:05:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2913 states. [2020-09-25 09:05:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3379 transitions. [2020-09-25 09:05:09,540 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3379 transitions. Word has length 200 [2020-09-25 09:05:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:09,540 INFO L479 AbstractCegarLoop]: Abstraction has 2913 states and 3379 transitions. [2020-09-25 09:05:09,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:05:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3379 transitions. [2020-09-25 09:05:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 09:05:09,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:09,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:05:09,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:09,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:09,553 INFO L82 PathProgramCache]: Analyzing trace with hash 46008152, now seen corresponding path program 1 times [2020-09-25 09:05:09,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:09,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167541193] [2020-09-25 09:05:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking...