/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_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:09:19,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:09:19,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:09:19,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:09:19,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:09:19,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:09:19,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:09:19,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:09:19,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:09:19,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:09:19,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:09:19,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:09:19,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:09:19,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:09:19,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:09:19,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:09:19,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:09:19,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:09:19,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:09:19,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:09:19,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:09:19,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:09:19,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:09:19,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:09:19,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:09:19,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:09:19,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:09:19,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:09:19,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:09:19,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:09:19,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:09:19,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:09:19,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:09:19,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:09:19,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:09:19,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:09:19,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:09:19,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:09:19,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:09:19,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:09:19,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:09:19,706 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 07:09:19,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:09:19,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:09:19,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:09:19,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:09:19,749 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:09:19,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:09:19,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:09:19,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:09:19,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:09:19,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:09:19,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:09:19,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:09:19,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:09:19,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:09:19,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:09:19,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:09:19,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:09:19,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:09:19,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:09:19,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:09:19,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:09:19,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:09:19,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:09:19,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:09:19,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:09:19,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:09:19,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:09:19,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:09:19,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:09:19,756 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 07:09:20,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:09:20,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:09:20,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:09:20,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:09:20,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:09:20,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-13 07:09:20,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fe53fb0b/e0a30429fc8c422fbd5244ef584f30c3/FLAG51747f94a [2020-10-13 07:09:21,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:09:21,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-13 07:09:21,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fe53fb0b/e0a30429fc8c422fbd5244ef584f30c3/FLAG51747f94a [2020-10-13 07:09:21,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fe53fb0b/e0a30429fc8c422fbd5244ef584f30c3 [2020-10-13 07:09:21,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:09:21,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:09:21,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:09:21,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:09:21,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:09:21,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:21" (1/1) ... [2020-10-13 07:09:21,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b6e365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:21, skipping insertion in model container [2020-10-13 07:09:21,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:21" (1/1) ... [2020-10-13 07:09:21,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:09:21,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:09:24,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:09:24,303 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:09:25,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:09:25,476 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:09:25,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25 WrapperNode [2020-10-13 07:09:25,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:09:25,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:09:25,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:09:25,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:09:25,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (1/1) ... [2020-10-13 07:09:25,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:09:25,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:09:25,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:09:25,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:09:25,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (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 [2020-10-13 07:09:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:09:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:09:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:09:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:09:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:09:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:09:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:09:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:09:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:09:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:09:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:09:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:09:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:09:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:09:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:09:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:09:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:09:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:09:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:09:33,193 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:09:33,194 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:09:33,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:33 BoogieIcfgContainer [2020-10-13 07:09:33,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:09:33,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:09:33,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:09:33,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:09:33,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:21" (1/3) ... [2020-10-13 07:09:33,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cee306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:33, skipping insertion in model container [2020-10-13 07:09:33,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:25" (2/3) ... [2020-10-13 07:09:33,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cee306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:33, skipping insertion in model container [2020-10-13 07:09:33,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:33" (3/3) ... [2020-10-13 07:09:33,217 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label31.c [2020-10-13 07:09:33,229 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:09:33,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:09:33,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:09:33,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:09:33,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:09:33,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:09:33,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:09:33,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:09:33,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:09:33,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:09:33,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:09:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:09:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-13 07:09:33,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:09:33,418 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, 1, 1, 1, 1, 1] [2020-10-13 07:09:33,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:09:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:09:33,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1364173768, now seen corresponding path program 1 times [2020-10-13 07:09:33,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:09:33,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099339126] [2020-10-13 07:09:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:09:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:39,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:39,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-13 07:09:39,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:09:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5280 [2020-10-13 07:09:39,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:09:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:09:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:09:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:09:43,243 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:09:43,440 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:09:43,652 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:09:43,886 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-13 07:09:44,066 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:09:44,261 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-13 07:09:44,502 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-13 07:09:44,785 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-13 07:09:45,023 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-13 07:09:45,231 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 07:09:45,618 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-13 07:09:45,954 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:09:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:09:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:45,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:45,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:09:45,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:45,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 07:09:45,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:09:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:09:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:57,451 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 07:09:57,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099339126] [2020-10-13 07:09:57,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:09:57,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:09:57,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069912976] [2020-10-13 07:09:57,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:09:57,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:09:57,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:09:57,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:09:57,477 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:09:57,878 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:09:58,584 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 07:09:59,315 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 07:10:00,055 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-13 07:10:04,092 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 173 [2020-10-13 07:10:07,369 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-13 07:10:09,998 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 163 [2020-10-13 07:10:10,775 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 177 [2020-10-13 07:10:12,451 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 198 DAG size of output: 166 [2020-10-13 07:10:22,490 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2020-10-13 07:10:23,252 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 178 [2020-10-13 07:10:26,347 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 175 [2020-10-13 07:10:33,901 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 163 [2020-10-13 07:10:34,690 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-10-13 07:10:37,211 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2020-10-13 07:10:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:10:49,998 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:10:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:10:50,000 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1003 [2020-10-13 07:10:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:10:50,041 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:10:50,041 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:10:50,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:10:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:10:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:10:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:10:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:10:50,218 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 1003 [2020-10-13 07:10:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:10:50,221 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:10:50,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:10:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:10:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-13 07:10:50,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:10:50,260 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, 1, 1, 1, 1, 1] [2020-10-13 07:10:50,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:10:50,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:10:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:10:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash 453343877, now seen corresponding path program 1 times [2020-10-13 07:10:50,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:10:50,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691545400] [2020-10-13 07:10:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:10:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-13 07:10:56,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:10:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5303 [2020-10-13 07:10:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:10:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:10:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:10:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:10:56,821 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:10:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:10:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:56,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:56,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:10:56,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:10:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 07:10:56,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:10:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:10:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:10:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:10:57,024 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:10:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:10:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:57,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:57,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:10:57,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:10:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-13 07:10:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:10:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:10:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:10:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:10:58,864 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 07:10:58,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691545400] [2020-10-13 07:10:58,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:10:58,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:10:58,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234980315] [2020-10-13 07:10:58,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:10:58,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:10:58,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:10:58,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:10:58,870 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:10:59,041 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:11:00,229 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:11:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:11:19,390 INFO L93 Difference]: Finished difference Result 4510 states and 7548 transitions. [2020-10-13 07:11:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:11:19,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1073 [2020-10-13 07:11:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:11:19,410 INFO L225 Difference]: With dead ends: 4510 [2020-10-13 07:11:19,410 INFO L226 Difference]: Without dead ends: 3251 [2020-10-13 07:11:19,414 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 07:11:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2020-10-13 07:11:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3149. [2020-10-13 07:11:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3149 states. [2020-10-13 07:11:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4656 transitions. [2020-10-13 07:11:19,510 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4656 transitions. Word has length 1073 [2020-10-13 07:11:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:11:19,510 INFO L479 AbstractCegarLoop]: Abstraction has 3149 states and 4656 transitions. [2020-10-13 07:11:19,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:11:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4656 transitions. [2020-10-13 07:11:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-13 07:11:19,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:11:19,538 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, 1, 1, 1, 1, 1] [2020-10-13 07:11:19,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:11:19,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:11:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:11:19,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1325159838, now seen corresponding path program 1 times [2020-10-13 07:11:19,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:11:19,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943586512] [2020-10-13 07:11:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:11:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:25,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:25,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1143 [2020-10-13 07:11:25,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:11:25,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5239 [2020-10-13 07:11:25,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:11:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:11:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:11:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:26,865 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-13 07:11:27,031 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-13 07:11:27,245 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-13 07:11:27,417 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-13 07:11:27,569 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-13 07:11:27,740 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-13 07:11:27,944 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-13 07:11:28,142 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-13 07:11:28,320 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-10-13 07:11:28,632 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:11:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:11:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:11:28,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 07:11:28,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:11:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:11:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:11:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:11:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:29,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:29,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:11:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-13 07:11:29,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:11:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:11:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:11:29,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:11:29,991 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 07:11:30,285 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-13 07:11:40,741 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 07:11:40,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943586512] [2020-10-13 07:11:40,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:11:40,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:11:40,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538159930] [2020-10-13 07:11:40,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:11:40,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:11:40,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:11:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:11:40,745 INFO L87 Difference]: Start difference. First operand 3149 states and 4656 transitions. Second operand 18 states. [2020-10-13 07:11:41,035 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 07:11:43,095 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 63 [2020-10-13 07:11:43,361 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 54 [2020-10-13 07:11:43,704 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2020-10-13 07:11:44,452 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 167 [2020-10-13 07:11:45,290 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 175 [2020-10-13 07:11:46,720 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 174 [2020-10-13 07:11:50,327 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 236 DAG size of output: 174 [2020-10-13 07:11:59,756 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 173 [2020-10-13 07:12:00,695 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 187 [2020-10-13 07:12:02,357 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 184 [2020-10-13 07:12:11,883 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 236 DAG size of output: 181 [2020-10-13 07:12:13,525 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 236 DAG size of output: 177 [2020-10-13 07:12:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:12:37,138 INFO L93 Difference]: Finished difference Result 8379 states and 13362 transitions. [2020-10-13 07:12:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 07:12:37,140 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1125 [2020-10-13 07:12:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:12:37,172 INFO L225 Difference]: With dead ends: 8379 [2020-10-13 07:12:37,172 INFO L226 Difference]: Without dead ends: 5990 [2020-10-13 07:12:37,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2020-10-13 07:12:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2020-10-13 07:12:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5842. [2020-10-13 07:12:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2020-10-13 07:12:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 8736 transitions. [2020-10-13 07:12:37,345 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 8736 transitions. Word has length 1125 [2020-10-13 07:12:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:12:37,346 INFO L479 AbstractCegarLoop]: Abstraction has 5842 states and 8736 transitions. [2020-10-13 07:12:37,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:12:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 8736 transitions. [2020-10-13 07:12:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-13 07:12:37,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:12:37,384 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, 1, 1, 1, 1, 1] [2020-10-13 07:12:37,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:12:37,384 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:12:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:12:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -250092523, now seen corresponding path program 1 times [2020-10-13 07:12:37,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:12:37,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871825874] [2020-10-13 07:12:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:12:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:42,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1170 [2020-10-13 07:12:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:12:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-13 07:12:42,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:12:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:12:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:12:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:12:46,096 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-13 07:12:46,385 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-13 07:12:46,649 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-13 07:12:46,933 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-13 07:12:47,204 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-13 07:12:47,500 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-13 07:12:47,741 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-13 07:12:47,951 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-13 07:12:48,155 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-13 07:12:48,411 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-13 07:12:48,660 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-13 07:12:48,875 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-13 07:12:49,382 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:12:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:12:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:49,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:49,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:12:49,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 07:12:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:12:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:12:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:12:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:49,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:12:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:49,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:49,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:12:49,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 07:12:49,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:12:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:12:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:12:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:12:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:50,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:50,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:50,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:12:50,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 07:12:50,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:12:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:12:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:12:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:50,612 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 07:13:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 147 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:13:06,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871825874] [2020-10-13 07:13:06,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:13:06,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 07:13:06,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834655639] [2020-10-13 07:13:06,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 07:13:06,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:13:06,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 07:13:06,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2020-10-13 07:13:06,108 INFO L87 Difference]: Start difference. First operand 5842 states and 8736 transitions. Second operand 26 states. [2020-10-13 07:13:06,405 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 137