/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:14:03,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:14:03,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:14:03,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:14:03,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:14:03,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:14:03,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:14:03,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:14:03,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:14:03,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:14:03,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:14:03,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:14:03,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:14:03,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:14:03,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:14:03,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:14:03,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:14:03,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:14:03,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:14:03,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:14:03,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:14:03,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:14:03,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:14:03,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:14:03,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:14:03,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:14:03,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:14:03,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:14:03,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:14:03,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:14:03,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:14:03,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:14:03,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:14:03,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:14:03,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:14:03,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:14:03,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:14:03,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:14:03,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:14:03,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:14:03,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:14:03,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 07:14:03,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:14:03,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:14:03,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:14:03,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:14:03,332 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:14:03,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:14:03,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:14:03,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:14:03,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:14:03,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:14:03,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:14:03,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:14:03,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:14:03,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:14:03,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:14:03,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:14:03,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:14:03,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:14:03,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:14:03,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:14:03,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:14:03,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:14:03,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:14:03,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:14:03,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:14:03,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:14:03,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:14:03,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:14:03,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:14:03,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:14:03,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:14:03,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:14:03,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:14:03,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:14:03,624 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:14:03,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label52.c [2020-10-13 07:14:03,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5110739ae/7aee0ba4a150407fbd1fa94d7e27cfe6/FLAG6b615ef20 [2020-10-13 07:14:04,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:14:04,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label52.c [2020-10-13 07:14:04,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5110739ae/7aee0ba4a150407fbd1fa94d7e27cfe6/FLAG6b615ef20 [2020-10-13 07:14:05,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5110739ae/7aee0ba4a150407fbd1fa94d7e27cfe6 [2020-10-13 07:14:05,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:14:05,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:14:05,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:14:05,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:14:05,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:14:05,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:05" (1/1) ... [2020-10-13 07:14:05,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dccfc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:05, skipping insertion in model container [2020-10-13 07:14:05,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:05" (1/1) ... [2020-10-13 07:14:05,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:14:05,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:14:07,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:14:07,481 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:14:08,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:14:08,689 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:14:08,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08 WrapperNode [2020-10-13 07:14:08,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:14:08,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:14:08,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:14:08,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:14:08,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:08,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:08,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:08,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:08,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:08,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:09,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... [2020-10-13 07:14:09,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:14:09,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:14:09,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:14:09,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:14:09,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:14:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:14:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:14:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:14:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:14:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:14:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:14:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:14:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:14:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:14:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:14:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:14:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:14:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:14:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:14:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:14:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:14:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:14:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:14:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:14:15,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:14:15,934 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:14:15,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:15 BoogieIcfgContainer [2020-10-13 07:14:15,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:14:15,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:14:15,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:14:15,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:14:15,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:14:05" (1/3) ... [2020-10-13 07:14:15,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed7b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:15, skipping insertion in model container [2020-10-13 07:14:15,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:08" (2/3) ... [2020-10-13 07:14:15,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed7b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:15, skipping insertion in model container [2020-10-13 07:14:15,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:15" (3/3) ... [2020-10-13 07:14:15,956 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label52.c [2020-10-13 07:14:15,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:14:15,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:14:15,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:14:16,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:14:16,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:14:16,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:14:16,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:14:16,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:14:16,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:14:16,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:14:16,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:14:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:14:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-13 07:14:16,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:14:16,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:14:16,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:14:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:14:16,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1969095729, now seen corresponding path program 1 times [2020-10-13 07:14:16,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:14:16,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032725332] [2020-10-13 07:14:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:14:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:22,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:22,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-13 07:14:22,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:14:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 07:14:22,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:14:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:14:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:14:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 07:14:25,645 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-13 07:14:25,841 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:14:26,044 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:14:26,375 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:14:26,657 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:14:26,942 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-13 07:14:27,350 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-13 07:14:27,635 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-13 07:14:28,051 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-13 07:14:28,214 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-13 07:14:28,437 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-13 07:14:28,655 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-13 07:14:28,952 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 57 [2020-10-13 07:14:29,139 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:14:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:14:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:29,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:14:29,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:14:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:14:29,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:14:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:14:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:14:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:14:41,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032725332] [2020-10-13 07:14:41,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:14:41,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 07:14:41,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490085545] [2020-10-13 07:14:41,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:14:41,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:14:41,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:14:41,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:14:41,107 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-13 07:14:41,451 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:14:42,119 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-13 07:14:42,742 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-13 07:14:43,477 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 174 [2020-10-13 07:14:47,144 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 173 [2020-10-13 07:14:50,311 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 172 [2020-10-13 07:14:52,673 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 163 [2020-10-13 07:14:53,381 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2020-10-13 07:14:54,316 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 168 [2020-10-13 07:15:03,339 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2020-10-13 07:15:04,016 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 168 [2020-10-13 07:15:06,890 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 168 [2020-10-13 07:15:13,970 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 162 [2020-10-13 07:15:14,769 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 166 [2020-10-13 07:15:17,193 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 164 [2020-10-13 07:15:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:15:28,995 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:15:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:15:28,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 998 [2020-10-13 07:15:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:15:29,034 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:15:29,034 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:15:29,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:15:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:15:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:15:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:15:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:15:29,206 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 998 [2020-10-13 07:15:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:15:29,209 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:15:29,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:15:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:15:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-13 07:15:29,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:15:29,257 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:15:29,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:15:29,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:15:29,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:15:29,259 INFO L82 PathProgramCache]: Analyzing trace with hash 115106146, now seen corresponding path program 1 times [2020-10-13 07:15:29,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:15:29,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669449061] [2020-10-13 07:15:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:15:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-13 07:15:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:15:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-13 07:15:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:15:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:15:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:15:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:35,201 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:15:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:15:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:35,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:35,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:15:35,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:15:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 07:15:35,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:15:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:15:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:15:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:15:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:15:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:15:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-13 07:15:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:15:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:15:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:15:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:15:37,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669449061] [2020-10-13 07:15:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:15:37,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:15:37,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326539668] [2020-10-13 07:15:37,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:15:37,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:15:37,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:15:37,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:15:37,063 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:15:37,249 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:15:38,388 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 07:15:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:15:58,532 INFO L93 Difference]: Finished difference Result 4479 states and 7522 transitions. [2020-10-13 07:15:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:15:58,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1068 [2020-10-13 07:15:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:15:58,550 INFO L225 Difference]: With dead ends: 4479 [2020-10-13 07:15:58,550 INFO L226 Difference]: Without dead ends: 3220 [2020-10-13 07:15:58,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:15:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-10-13 07:15:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3159. [2020-10-13 07:15:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3159 states. [2020-10-13 07:15:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4671 transitions. [2020-10-13 07:15:58,641 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4671 transitions. Word has length 1068 [2020-10-13 07:15:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:15:58,642 INFO L479 AbstractCegarLoop]: Abstraction has 3159 states and 4671 transitions. [2020-10-13 07:15:58,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:15:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4671 transitions. [2020-10-13 07:15:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2020-10-13 07:15:58,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:15:58,661 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:15:58,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:15:58,662 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:15:58,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:15:58,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1716321125, now seen corresponding path program 1 times [2020-10-13 07:15:58,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:15:58,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603331805] [2020-10-13 07:15:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:15:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:04,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1138 [2020-10-13 07:16:04,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:16:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-13 07:16:04,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:16:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:16:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:16:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:05,756 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-13 07:16:05,909 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-13 07:16:06,081 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-13 07:16:06,222 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-13 07:16:06,664 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-13 07:16:07,068 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:16:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:16:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:07,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:07,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:16:07,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:07,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 07:16:07,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:16:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:16:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:16:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:16:07,260 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:16:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:16:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:07,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:16:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-13 07:16:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:16:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:16:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:16:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:16:16,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603331805] [2020-10-13 07:16:16,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:16:16,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:16:16,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148853410] [2020-10-13 07:16:16,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:16:16,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:16:16,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:16:16,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:16:16,169 INFO L87 Difference]: Start difference. First operand 3159 states and 4671 transitions. Second operand 18 states. [2020-10-13 07:16:16,425 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 07:16:18,260 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-13 07:16:18,546 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-13 07:16:18,893 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-10-13 07:16:19,608 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 169 [2020-10-13 07:16:20,372 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 177 [2020-10-13 07:16:21,746 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 176 [2020-10-13 07:16:24,678 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 175 [2020-10-13 07:16:33,619 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 165 [2020-10-13 07:16:34,365 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 171 [2020-10-13 07:16:35,693 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 170 [2020-10-13 07:16:44,689 WARN L193 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 169 [2020-10-13 07:16:45,785 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 167 [2020-10-13 07:17:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:17:08,430 INFO L93 Difference]: Finished difference Result 8442 states and 13434 transitions. [2020-10-13 07:17:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 07:17:08,431 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1120 [2020-10-13 07:17:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:17:08,464 INFO L225 Difference]: With dead ends: 8442 [2020-10-13 07:17:08,465 INFO L226 Difference]: Without dead ends: 6043 [2020-10-13 07:17:08,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:17:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2020-10-13 07:17:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 5921. [2020-10-13 07:17:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5921 states. [2020-10-13 07:17:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 8840 transitions. [2020-10-13 07:17:08,628 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 8840 transitions. Word has length 1120 [2020-10-13 07:17:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:17:08,629 INFO L479 AbstractCegarLoop]: Abstraction has 5921 states and 8840 transitions. [2020-10-13 07:17:08,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:17:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 8840 transitions. [2020-10-13 07:17:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2020-10-13 07:17:08,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:17:08,687 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:17:08,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:17:08,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:17:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:17:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1194474962, now seen corresponding path program 1 times [2020-10-13 07:17:08,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:17:08,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851076207] [2020-10-13 07:17:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:17:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:14,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:14,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1165 [2020-10-13 07:17:14,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:17:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5216 [2020-10-13 07:17:14,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:17:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:17:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:17:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:18,105 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-13 07:17:18,343 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-10-13 07:17:18,682 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-13 07:17:18,954 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-13 07:17:19,235 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-13 07:17:19,525 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-13 07:17:19,768 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-13 07:17:19,966 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-13 07:17:20,171 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-13 07:17:20,414 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-13 07:17:20,642 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-13 07:17:20,874 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-10-13 07:17:21,400 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:17:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:17:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:21,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:21,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:17:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 07:17:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:17:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:17:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:17:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:17:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:21,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:21,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:17:21,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 07:17:21,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:17:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:17:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:17:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:17:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:22,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:22,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:17:22,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 07:17:22,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:17:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:17:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:17:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:22,717 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-13 07:17:23,054 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-10-13 07:17:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:17:38,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851076207] [2020-10-13 07:17:38,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:17:38,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 07:17:38,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142619675] [2020-10-13 07:17:38,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 07:17:38,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:17:38,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 07:17:38,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-13 07:17:38,208 INFO L87 Difference]: Start difference. First operand 5921 states and 8840 transitions. Second operand 25 states. [2020-10-13 07:17:38,847 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2020-10-13 07:17:42,125 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 142 [2020-10-13 07:17:43,406 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2020-10-13 07:17:43,770 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-13 07:17:44,221 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-10-13 07:17:45,178 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 171 [2020-10-13 07:17:46,204 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 180 [2020-10-13 07:17:48,823 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2020-10-13 07:17:49,263 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 07:17:49,948 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-10-13 07:17:50,591 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-13 07:17:51,320 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-13 07:17:52,475 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84