/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=SMALLEST --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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:56,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:56,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:56,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:56,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:56,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:56,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:56,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:56,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:56,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:56,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:56,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:56,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:56,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:56,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:56,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:56,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:56,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:56,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:56,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:56,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:56,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:56,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:56,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:56,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:56,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:56,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:56,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:56,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:56,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:56,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:56,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:56,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:56,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:56,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:56,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:56,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:56,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:56,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:56,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:56,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:56,768 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 [2020-09-24 18:24:56,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:56,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:56,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:56,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:56,795 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:56,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:56,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:56,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:56,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:56,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:56,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:56,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:56,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:56,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:56,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:56,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:56,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:56,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:56,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:56,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:56,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:56,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:56,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:56,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:56,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:56,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:56,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:56,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:56,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:56,800 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:57,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:57,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:57,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:57,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:57,273 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:57,274 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-24 18:24:57,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ec6731d/6ff83f1c7c9f4a5e9f070d2d4e08975c/FLAG80665ddbb [2020-09-24 18:24:58,013 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:58,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-24 18:24:58,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ec6731d/6ff83f1c7c9f4a5e9f070d2d4e08975c/FLAG80665ddbb [2020-09-24 18:24:58,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ec6731d/6ff83f1c7c9f4a5e9f070d2d4e08975c [2020-09-24 18:24:58,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:58,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:58,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:58,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:58,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:58,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:58" (1/1) ... [2020-09-24 18:24:58,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:58, skipping insertion in model container [2020-09-24 18:24:58,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:58" (1/1) ... [2020-09-24 18:24:58,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:58,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:58,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:58,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:59,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:59,098 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:59,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59 WrapperNode [2020-09-24 18:24:59,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:59,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:59,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:59,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:59,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (1/1) ... [2020-09-24 18:24:59,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:59,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:59,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:59,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:59,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (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 [2020-09-24 18:24:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:01,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:01,020 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:01,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:01 BoogieIcfgContainer [2020-09-24 18:25:01,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:01,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:01,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:01,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:01,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:58" (1/3) ... [2020-09-24 18:25:01,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:01, skipping insertion in model container [2020-09-24 18:25:01,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:59" (2/3) ... [2020-09-24 18:25:01,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:01, skipping insertion in model container [2020-09-24 18:25:01,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:01" (3/3) ... [2020-09-24 18:25:01,039 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-24 18:25:01,052 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:01,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:01,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:01,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:01,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:01,121 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:01,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:01,121 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:01,121 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:01,122 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:01,122 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:25:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 18:25:01,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:01,166 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] [2020-09-24 18:25:01,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:01,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-24 18:25:01,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:01,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-24 18:25:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 18:25:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1478 [2020-09-24 18:25:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:25:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:25:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:25:03,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:03,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:25:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:25:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:03,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-24 18:25:03,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:03,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:03,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27803930] [2020-09-24 18:25:03,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:03,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:03,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:03,131 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:25:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:05,544 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 18:25:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:05,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-24 18:25:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:05,570 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 18:25:05,570 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 18:25:05,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 18:25:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 18:25:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 18:25:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 18:25:05,692 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-24 18:25:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:05,693 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 18:25:05,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:25:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 18:25:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 18:25:05,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:05,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:05,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:25:05,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:05,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:05,711 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-24 18:25:05,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:05,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733526647] [2020-09-24 18:25:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 18:25:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:25:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:25:10,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:25:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:25:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:10,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:25:10,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:10,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:11,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 18:25:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:25:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:25:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:11,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733526647] [2020-09-24 18:25:11,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:11,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:11,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886596861] [2020-09-24 18:25:11,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:11,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:11,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:11,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:11,166 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-24 18:25:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:13,041 INFO L93 Difference]: Finished difference Result 1451 states and 1858 transitions. [2020-09-24 18:25:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:13,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-24 18:25:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:13,046 INFO L225 Difference]: With dead ends: 1451 [2020-09-24 18:25:13,046 INFO L226 Difference]: Without dead ends: 548 [2020-09-24 18:25:13,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-09-24 18:25:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 538. [2020-09-24 18:25:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-24 18:25:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 655 transitions. [2020-09-24 18:25:13,074 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 655 transitions. Word has length 146 [2020-09-24 18:25:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:13,075 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 655 transitions. [2020-09-24 18:25:13,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 655 transitions. [2020-09-24 18:25:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 18:25:13,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:13,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:13,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:25:13,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:13,080 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-24 18:25:13,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:13,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295110131] [2020-09-24 18:25:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:18,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 18:25:18,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:25:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:25:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:25:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:25:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:18,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:18,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:25:18,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:18,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:25:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:25:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:18,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295110131] [2020-09-24 18:25:18,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:18,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:18,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470622709] [2020-09-24 18:25:18,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:18,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:18,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:18,369 INFO L87 Difference]: Start difference. First operand 538 states and 655 transitions. Second operand 5 states. [2020-09-24 18:25:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:19,974 INFO L93 Difference]: Finished difference Result 1391 states and 1765 transitions. [2020-09-24 18:25:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:19,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-24 18:25:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:19,981 INFO L225 Difference]: With dead ends: 1391 [2020-09-24 18:25:19,981 INFO L226 Difference]: Without dead ends: 868 [2020-09-24 18:25:19,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-09-24 18:25:20,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 842. [2020-09-24 18:25:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-09-24 18:25:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1003 transitions. [2020-09-24 18:25:20,019 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1003 transitions. Word has length 146 [2020-09-24 18:25:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:20,019 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1003 transitions. [2020-09-24 18:25:20,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1003 transitions. [2020-09-24 18:25:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 18:25:20,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:20,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:20,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:20,032 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 871237888, now seen corresponding path program 1 times [2020-09-24 18:25:20,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:20,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883886973] [2020-09-24 18:25:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 18:25:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:25:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1860 [2020-09-24 18:25:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-24 18:25:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 18:25:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:22,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:25:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:22,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:25:22,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 18:25:22,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:25:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:22,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883886973] [2020-09-24 18:25:22,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:22,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:22,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816096997] [2020-09-24 18:25:22,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:22,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:22,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:22,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:22,160 INFO L87 Difference]: Start difference. First operand 842 states and 1003 transitions. Second operand 5 states. [2020-09-24 18:25:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:24,110 INFO L93 Difference]: Finished difference Result 1995 states and 2464 transitions. [2020-09-24 18:25:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:24,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-24 18:25:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:24,118 INFO L225 Difference]: With dead ends: 1995 [2020-09-24 18:25:24,118 INFO L226 Difference]: Without dead ends: 1168 [2020-09-24 18:25:24,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-09-24 18:25:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1146. [2020-09-24 18:25:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-09-24 18:25:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1343 transitions. [2020-09-24 18:25:24,169 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1343 transitions. Word has length 168 [2020-09-24 18:25:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:24,172 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1343 transitions. [2020-09-24 18:25:24,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1343 transitions. [2020-09-24 18:25:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:25:24,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:24,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:24,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:24,177 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:24,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:24,178 INFO L82 PathProgramCache]: Analyzing trace with hash -922296183, now seen corresponding path program 1 times [2020-09-24 18:25:24,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:24,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827325284] [2020-09-24 18:25:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:25:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:25:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-24 18:25:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:25:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:29,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:29,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:29,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 18:25:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 18:25:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 18:25:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:29,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827325284] [2020-09-24 18:25:29,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:29,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:29,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076453828] [2020-09-24 18:25:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:29,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:29,666 INFO L87 Difference]: Start difference. First operand 1146 states and 1343 transitions. Second operand 5 states. [2020-09-24 18:25:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:31,584 INFO L93 Difference]: Finished difference Result 2607 states and 3156 transitions. [2020-09-24 18:25:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:31,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-24 18:25:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:31,596 INFO L225 Difference]: With dead ends: 2607 [2020-09-24 18:25:31,596 INFO L226 Difference]: Without dead ends: 1476 [2020-09-24 18:25:31,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-24 18:25:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1450. [2020-09-24 18:25:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-09-24 18:25:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1714 transitions. [2020-09-24 18:25:31,650 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1714 transitions. Word has length 187 [2020-09-24 18:25:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:31,651 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 1714 transitions. [2020-09-24 18:25:31,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1714 transitions. [2020-09-24 18:25:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-24 18:25:31,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:31,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:31,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:31,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:31,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1915764090, now seen corresponding path program 1 times [2020-09-24 18:25:31,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:31,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591694999] [2020-09-24 18:25:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:36,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 18:25:36,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:25:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:25:36,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:25:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 18:25:36,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:36,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:36,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:36,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:36,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:36,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 18:25:36,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:25:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:37,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:37,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 18:25:37,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 18:25:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 18:25:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:37,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591694999] [2020-09-24 18:25:37,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:37,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:37,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699928723] [2020-09-24 18:25:37,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:37,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:37,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:37,411 INFO L87 Difference]: Start difference. First operand 1450 states and 1714 transitions. Second operand 7 states. [2020-09-24 18:25:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:39,650 INFO L93 Difference]: Finished difference Result 3262 states and 3972 transitions. [2020-09-24 18:25:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:25:39,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-24 18:25:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:39,665 INFO L225 Difference]: With dead ends: 3262 [2020-09-24 18:25:39,665 INFO L226 Difference]: Without dead ends: 1827 [2020-09-24 18:25:39,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:25:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-09-24 18:25:39,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1641. [2020-09-24 18:25:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-09-24 18:25:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1932 transitions. [2020-09-24 18:25:39,717 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1932 transitions. Word has length 248 [2020-09-24 18:25:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:39,718 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 1932 transitions. [2020-09-24 18:25:39,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1932 transitions. [2020-09-24 18:25:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-24 18:25:39,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:39,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:39,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:25:39,725 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash -958924327, now seen corresponding path program 1 times [2020-09-24 18:25:39,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:39,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206203199] [2020-09-24 18:25:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-24 18:25:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:25:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:25:44,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 218 [2020-09-24 18:25:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:25:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:44,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:44,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:25:44,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:25:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 18:25:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:45,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:45,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 18:25:45,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 18:25:45,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 18:25:45,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 18:25:45,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206203199] [2020-09-24 18:25:45,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:45,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:45,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021510774] [2020-09-24 18:25:45,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:45,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:45,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:45,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:45,168 INFO L87 Difference]: Start difference. First operand 1641 states and 1932 transitions. Second operand 5 states.