/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:05,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:05,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:05,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:05,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:05,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:05,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:05,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:05,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:05,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:05,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:05,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:05,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:05,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:05,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:05,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:05,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:05,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:05,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:05,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:05,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:05,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:05,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:05,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:05,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:05,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:05,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:05,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:05,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:05,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:05,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:05,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:05,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:05,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:05,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:05,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:05,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:05,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:05,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:05,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:05,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:05,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:07:05,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:05,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:05,783 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:05,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:05,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:05,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:05,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:05,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:05,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:05,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:05,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:05,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:05,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:05,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:05,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:05,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:05,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:05,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:05,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:05,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:05,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:05,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:05,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:05,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:05,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:05,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:05,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:07:06,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:06,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:06,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:06,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:06,291 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:06,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 10:07:06,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fd0c6d5a/66138e536d494b6d93cfe0f9ad6cd8eb/FLAGd216a663c [2020-09-25 10:07:07,036 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:07,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 10:07:07,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fd0c6d5a/66138e536d494b6d93cfe0f9ad6cd8eb/FLAGd216a663c [2020-09-25 10:07:07,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fd0c6d5a/66138e536d494b6d93cfe0f9ad6cd8eb [2020-09-25 10:07:07,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:07,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:07,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:07,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:07,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:07,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:07" (1/1) ... [2020-09-25 10:07:07,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:07, skipping insertion in model container [2020-09-25 10:07:07,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:07" (1/1) ... [2020-09-25 10:07:07,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:07,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:08,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:08,101 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:08,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:08,269 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08 WrapperNode [2020-09-25 10:07:08,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:08,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:08,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:08,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:08,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... [2020-09-25 10:07:08,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:08,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:08,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:08,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:08,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:09,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:09,892 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:09,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:09 BoogieIcfgContainer [2020-09-25 10:07:09,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:09,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:09,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:09,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:09,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:07" (1/3) ... [2020-09-25 10:07:09,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:09, skipping insertion in model container [2020-09-25 10:07:09,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:08" (2/3) ... [2020-09-25 10:07:09,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:09, skipping insertion in model container [2020-09-25 10:07:09,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:09" (3/3) ... [2020-09-25 10:07:09,921 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 10:07:09,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:09,950 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:09,973 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:10,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:10,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:10,007 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:10,007 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:10,007 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:10,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:10,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:10,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:07:10,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:10,063 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] [2020-09-25 10:07:10,063 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:10,072 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 10:07:10,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:10,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766651903] [2020-09-25 10:07:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:15,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 10:07:15,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-09-25 10:07:15,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:15,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:07:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:07:15,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:07:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:15,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766651903] [2020-09-25 10:07:15,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:15,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:07:15,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328836278] [2020-09-25 10:07:15,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:15,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:15,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:15,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:15,905 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:07:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:18,916 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 10:07:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:07:18,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 10:07:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:18,966 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 10:07:18,966 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 10:07:18,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 10:07:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 10:07:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 10:07:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 10:07:19,095 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 143 [2020-09-25 10:07:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:19,096 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 10:07:19,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 10:07:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 10:07:19,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:19,108 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:07:19,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:19,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash -581235324, now seen corresponding path program 1 times [2020-09-25 10:07:19,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:19,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447417901] [2020-09-25 10:07:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:24,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 10:07:24,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-09-25 10:07:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:24,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:07:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:07:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:24,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:24,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:07:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:24,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:24,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:24,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:24,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:24,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 10:07:24,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:24,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:07:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:24,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:25,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447417901] [2020-09-25 10:07:25,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:25,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:07:25,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144857515] [2020-09-25 10:07:25,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:07:25,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:25,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:07:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:07:25,363 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 13 states. [2020-09-25 10:07:25,806 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-09-25 10:07:26,535 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-09-25 10:07:26,717 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-09-25 10:07:27,454 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-09-25 10:07:28,111 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-09-25 10:07:28,422 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-09-25 10:07:30,202 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-25 10:07:31,001 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-09-25 10:07:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:32,893 INFO L93 Difference]: Finished difference Result 3021 states and 4087 transitions. [2020-09-25 10:07:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 10:07:32,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 164 [2020-09-25 10:07:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:32,907 INFO L225 Difference]: With dead ends: 3021 [2020-09-25 10:07:32,908 INFO L226 Difference]: Without dead ends: 2016 [2020-09-25 10:07:32,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=365, Invalid=895, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:07:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2020-09-25 10:07:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1667. [2020-09-25 10:07:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-09-25 10:07:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2008 transitions. [2020-09-25 10:07:32,999 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2008 transitions. Word has length 164 [2020-09-25 10:07:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:33,000 INFO L479 AbstractCegarLoop]: Abstraction has 1667 states and 2008 transitions. [2020-09-25 10:07:33,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:07:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2008 transitions. [2020-09-25 10:07:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 10:07:33,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:33,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:07:33,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:33,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash 196936814, now seen corresponding path program 1 times [2020-09-25 10:07:33,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:33,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227396221] [2020-09-25 10:07:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:38,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 10:07:38,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:07:38,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:38,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:07:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:07:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 10:07:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 10:07:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:38,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 10:07:38,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:38,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:38,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 10:07:38,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:38,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:07:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:07:39,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227396221] [2020-09-25 10:07:39,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:39,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:07:39,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783553024] [2020-09-25 10:07:39,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:07:39,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:39,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:07:39,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:07:39,288 INFO L87 Difference]: Start difference. First operand 1667 states and 2008 transitions. Second operand 13 states. [2020-09-25 10:07:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:44,950 INFO L93 Difference]: Finished difference Result 5980 states and 8242 transitions. [2020-09-25 10:07:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-25 10:07:44,956 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 185 [2020-09-25 10:07:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:44,995 INFO L225 Difference]: With dead ends: 5980 [2020-09-25 10:07:44,995 INFO L226 Difference]: Without dead ends: 4337 [2020-09-25 10:07:45,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 10:07:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4337 states. [2020-09-25 10:07:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4337 to 2382. [2020-09-25 10:07:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2382 states. [2020-09-25 10:07:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 2861 transitions. [2020-09-25 10:07:45,173 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 2861 transitions. Word has length 185 [2020-09-25 10:07:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:45,173 INFO L479 AbstractCegarLoop]: Abstraction has 2382 states and 2861 transitions. [2020-09-25 10:07:45,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:07:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 2861 transitions. [2020-09-25 10:07:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 10:07:45,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:45,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:45,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:45,186 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1775383512, now seen corresponding path program 1 times [2020-09-25 10:07:45,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:45,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828977609] [2020-09-25 10:07:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 10:07:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:07:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:50,738 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-09-25 10:07:50,891 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-09-25 10:07:51,043 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-09-25 10:07:51,264 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2020-09-25 10:07:51,452 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-09-25 10:07:51,649 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2020-09-25 10:07:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:51,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:07:51,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:07:51,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:07:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:51,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:07:51,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:51,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 10:07:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:07:51,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:07:51,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 10:07:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:07:51,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 10:07:51,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:07:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:07:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 79 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 10:07:52,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828977609] [2020-09-25 10:07:52,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:52,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:07:52,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966075462] [2020-09-25 10:07:52,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:07:52,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:52,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:07:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:07:52,213 INFO L87 Difference]: Start difference. First operand 2382 states and 2861 transitions. Second operand 16 states. [2020-09-25 10:07:54,417 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 10:07:54,610 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 10:07:54,827 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 10:07:55,462 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-09-25 10:07:55,589 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-25 10:07:56,253 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-09-25 10:07:56,862 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92