/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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:06:34,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:06:34,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:06:34,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:06:34,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:06:34,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:06:34,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:06:34,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:06:34,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:06:34,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:06:34,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:06:34,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:06:34,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:06:34,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:06:34,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:06:34,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:06:34,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:06:34,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:06:34,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:06:34,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:06:34,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:06:34,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:06:34,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:06:34,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:06:34,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:06:34,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:06:34,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:06:34,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:06:34,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:06:34,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:06:34,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:06:34,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:06:34,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:06:34,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:06:34,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:06:34,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:06:34,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:06:34,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:06:34,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:06:34,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:06:34,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:06:34,565 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 07:06:34,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:06:34,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:06:34,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:06:34,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:06:34,590 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:06:34,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:06:34,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:06:34,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:06:34,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:06:34,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:06:34,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:06:34,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:06:34,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:06:34,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:06:34,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:06:34,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:06:34,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:06:34,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:06:34,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:06:34,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:06:34,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:06:34,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:06:34,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:06:34,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:06:34,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:06:34,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:06:34,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:06:34,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:06:34,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:06:34,595 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 07:06:34,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:06:34,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:06:34,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:06:34,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:06:34,905 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:06:34,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label27.c [2020-10-13 07:06:34,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f615a0b8e/1706aa0d16254c0b849be656b534ff9e/FLAGd47060a10 [2020-10-13 07:06:36,067 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:06:36,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label27.c [2020-10-13 07:06:36,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f615a0b8e/1706aa0d16254c0b849be656b534ff9e/FLAGd47060a10 [2020-10-13 07:06:36,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f615a0b8e/1706aa0d16254c0b849be656b534ff9e [2020-10-13 07:06:36,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:06:36,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:06:36,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:36,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:06:36,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:06:36,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:36" (1/1) ... [2020-10-13 07:06:36,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e983976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:36, skipping insertion in model container [2020-10-13 07:06:36,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:36" (1/1) ... [2020-10-13 07:06:36,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:06:36,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:06:38,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:38,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:06:39,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:39,896 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:06:39,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39 WrapperNode [2020-10-13 07:06:39,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:39,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:06:39,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:06:39,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:06:39,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:39,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:40,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:40,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:40,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:40,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:40,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... [2020-10-13 07:06:40,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:06:40,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:06:40,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:06:40,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:06:40,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:06:40,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:06:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:06:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:06:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:06:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:06:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:06:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:06:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:06:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:06:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:06:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:06:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:06:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:06:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:06:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:06:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:06:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:06:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:06:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:06:47,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:06:47,676 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:06:47,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:47 BoogieIcfgContainer [2020-10-13 07:06:47,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:06:47,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:06:47,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:06:47,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:06:47,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:06:36" (1/3) ... [2020-10-13 07:06:47,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf04fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:47, skipping insertion in model container [2020-10-13 07:06:47,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:39" (2/3) ... [2020-10-13 07:06:47,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf04fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:47, skipping insertion in model container [2020-10-13 07:06:47,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:47" (3/3) ... [2020-10-13 07:06:47,695 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label27.c [2020-10-13 07:06:47,705 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:06:47,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:06:47,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:06:47,754 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:06:47,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:06:47,755 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:06:47,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:06:47,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:06:47,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:06:47,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:06:47,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:06:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:06:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-13 07:06:47,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:47,850 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] [2020-10-13 07:06:47,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:47,857 INFO L82 PathProgramCache]: Analyzing trace with hash 946646064, now seen corresponding path program 1 times [2020-10-13 07:06:47,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:47,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121084169] [2020-10-13 07:06:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:53,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:53,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-13 07:06:53,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-13 07:06:53,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:06:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:06:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:07:02,053 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-13 07:07:02,350 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-13 07:07:02,784 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-13 07:07:03,226 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-13 07:07:03,582 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-13 07:07:03,971 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-13 07:07:04,279 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-10-13 07:07:04,643 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 81 [2020-10-13 07:07:05,031 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 80 [2020-10-13 07:07:05,380 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 67 [2020-10-13 07:07:05,633 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-13 07:07:05,888 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-13 07:07:06,102 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-13 07:07:06,347 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-10-13 07:07:06,601 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-10-13 07:07:06,932 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2020-10-13 07:07:07,105 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:07:07,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:07:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:07,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:07:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 07:07:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:07:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:07:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:21,422 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 07:07:21,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121084169] [2020-10-13 07:07:21,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:21,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 07:07:21,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237538653] [2020-10-13 07:07:21,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:07:21,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:07:21,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:07:21,451 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-13 07:07:21,889 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 07:07:22,806 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 190 [2020-10-13 07:07:23,644 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 190 [2020-10-13 07:07:24,642 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 208 [2020-10-13 07:07:29,553 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 207 [2020-10-13 07:07:33,688 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 227 DAG size of output: 204 [2020-10-13 07:07:36,625 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 186 [2020-10-13 07:07:37,591 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-10-13 07:07:39,299 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 216 DAG size of output: 193 [2020-10-13 07:07:51,288 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 177 [2020-10-13 07:07:52,165 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-13 07:07:55,758 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 183 [2020-10-13 07:08:04,716 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 175 [2020-10-13 07:08:05,672 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 182 [2020-10-13 07:08:08,943 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 179 [2020-10-13 07:08:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:25,102 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:08:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:08:25,107 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 961 [2020-10-13 07:08:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:25,149 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:08:25,150 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:08:25,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:08:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:08:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:08:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:08:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:08:25,337 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 961 [2020-10-13 07:08:25,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:25,340 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:08:25,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:08:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:08:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-13 07:08:25,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:25,418 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] [2020-10-13 07:08:25,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:08:25,418 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 693979837, now seen corresponding path program 1 times [2020-10-13 07:08:25,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:25,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835500807] [2020-10-13 07:08:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:26,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:31,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:31,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1049 [2020-10-13 07:08:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:08:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-13 07:08:31,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:08:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:08:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:08:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:31,642 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:31,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:31,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:31,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 07:08:31,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:08:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:08:31,820 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:08:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:32,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:32,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:08:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-13 07:08:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:08:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:08:33,379 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 07:08:33,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835500807] [2020-10-13 07:08:33,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:08:33,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 07:08:33,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721726230] [2020-10-13 07:08:33,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 07:08:33,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 07:08:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 07:08:33,384 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 8 states. [2020-10-13 07:08:33,565 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:08:34,847 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 07:08:35,513 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:09:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:09:09,590 INFO L93 Difference]: Finished difference Result 5723 states and 9791 transitions. [2020-10-13 07:09:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 07:09:09,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1031 [2020-10-13 07:09:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:09:09,618 INFO L225 Difference]: With dead ends: 5723 [2020-10-13 07:09:09,618 INFO L226 Difference]: Without dead ends: 4464 [2020-10-13 07:09:09,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-13 07:09:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2020-10-13 07:09:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 4371. [2020-10-13 07:09:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4371 states. [2020-10-13 07:09:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4371 states to 4371 states and 6652 transitions. [2020-10-13 07:09:09,768 INFO L78 Accepts]: Start accepts. Automaton has 4371 states and 6652 transitions. Word has length 1031 [2020-10-13 07:09:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:09:09,769 INFO L479 AbstractCegarLoop]: Abstraction has 4371 states and 6652 transitions. [2020-10-13 07:09:09,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 07:09:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4371 states and 6652 transitions. [2020-10-13 07:09:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2020-10-13 07:09:09,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:09:09,794 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] [2020-10-13 07:09:09,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:09:09,794 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:09:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:09:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1161752282, now seen corresponding path program 1 times [2020-10-13 07:09:09,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:09:09,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728222055] [2020-10-13 07:09:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:09:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:15,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:15,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1101 [2020-10-13 07:09:15,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:09:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-13 07:09:15,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:09:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:09:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:09:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:17,071 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-13 07:09:17,328 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-13 07:09:17,571 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-13 07:09:17,829 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-13 07:09:18,058 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2020-10-13 07:09:18,265 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-10-13 07:09:18,599 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 07:09:18,779 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-13 07:09:18,932 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-13 07:09:19,257 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:09:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:09:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:19,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:09:19,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 07:09:19,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:09:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:09:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 07:09:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:09:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:19,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:20,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:09:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-13 07:09:20,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:09:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:09:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:20,426 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-13 07:09:20,689 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-13 07:09:29,884 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 07:09:29,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728222055] [2020-10-13 07:09:29,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:09:29,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:09:29,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663337292] [2020-10-13 07:09:29,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:09:29,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:09:29,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:09:29,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:09:29,888 INFO L87 Difference]: Start difference. First operand 4371 states and 6652 transitions. Second operand 18 states. [2020-10-13 07:09:30,155 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 07:09:32,269 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2020-10-13 07:09:32,530 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-10-13 07:09:32,904 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2020-10-13 07:09:33,730 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 178 [2020-10-13 07:09:34,695 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 198 [2020-10-13 07:09:36,130 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 195 [2020-10-13 07:09:39,650 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 222 DAG size of output: 192 [2020-10-13 07:09:45,176 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 149 [2020-10-13 07:09:51,474 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 170 [2020-10-13 07:09:52,897 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 209 DAG size of output: 184 [2020-10-13 07:09:54,671 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 181 [2020-10-13 07:10:07,791 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 207 DAG size of output: 178 [2020-10-13 07:10:09,495 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 207 DAG size of output: 174