/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/Problem02_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:03,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:03,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:03,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:03,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:03,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:03,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:03,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:03,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:03,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:03,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:03,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:03,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:03,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:03,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:03,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:03,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:03,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:03,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:03,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:03,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:03,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:03,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:03,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:03,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:03,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:03,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:03,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:03,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:03,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:03,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:03,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:03,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:03,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:03,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:03,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:03,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:03,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:03,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:03,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:03,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:03,738 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 18:21:03,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:03,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:03,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:03,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:03,784 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:03,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:03,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:03,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:03,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:03,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:03,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:03,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:03,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:03,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:03,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:03,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:03,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:03,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:03,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:03,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:03,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:03,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:03,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:03,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:03,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:03,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:03,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:03,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:03,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:03,794 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 18:21:04,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:04,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:04,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:04,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:04,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:04,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-24 18:21:04,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b566e6e0f/32af69882928477dbdd1d99ad7f7fcf5/FLAGc7223a531 [2020-09-24 18:21:05,013 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:05,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-24 18:21:05,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b566e6e0f/32af69882928477dbdd1d99ad7f7fcf5/FLAGc7223a531 [2020-09-24 18:21:05,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b566e6e0f/32af69882928477dbdd1d99ad7f7fcf5 [2020-09-24 18:21:05,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:05,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:05,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:05,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:05,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:05,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:05" (1/1) ... [2020-09-24 18:21:05,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:05, skipping insertion in model container [2020-09-24 18:21:05,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:05" (1/1) ... [2020-09-24 18:21:05,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:05,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:05,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:05,996 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:06,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:06,269 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:06,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06 WrapperNode [2020-09-24 18:21:06,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:06,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:06,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:06,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:06,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (1/1) ... [2020-09-24 18:21:06,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:06,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:06,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:06,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:06,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (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 18:21:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:08,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:08,011 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:08,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:08 BoogieIcfgContainer [2020-09-24 18:21:08,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:08,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:08,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:08,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:08,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:05" (1/3) ... [2020-09-24 18:21:08,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:08, skipping insertion in model container [2020-09-24 18:21:08,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:06" (2/3) ... [2020-09-24 18:21:08,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:08, skipping insertion in model container [2020-09-24 18:21:08,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:08" (3/3) ... [2020-09-24 18:21:08,031 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2020-09-24 18:21:08,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:08,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:08,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:08,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:08,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:08,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:08,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:08,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:08,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:08,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:08,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 18:21:08,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:08,175 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] [2020-09-24 18:21:08,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:08,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1587967458, now seen corresponding path program 1 times [2020-09-24 18:21:08,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:08,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-24 18:21:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:13,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 18:21:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-09-24 18:21:13,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:21:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:21:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:21:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:13,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:13,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:21:13,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:21:13,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:13,790 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 18:21:13,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-24 18:21:13,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:13,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:13,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456225352] [2020-09-24 18:21:13,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:13,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:13,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:13,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:13,827 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:16,115 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 18:21:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:16,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-09-24 18:21:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:16,145 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 18:21:16,145 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 18:21:16,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 18:21:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 18:21:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 18:21:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-24 18:21:16,279 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 139 [2020-09-24 18:21:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:16,284 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-24 18:21:16,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-24 18:21:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 18:21:16,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:16,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:16,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:16,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:16,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:16,303 INFO L82 PathProgramCache]: Analyzing trace with hash -69502905, now seen corresponding path program 1 times [2020-09-24 18:21:16,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:16,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830846011] [2020-09-24 18:21:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:16,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 18:21:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:21:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 18:21:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:21,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:21,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:21,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:21,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:21,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:21:21,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:21:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:21,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830846011] [2020-09-24 18:21:21,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:21,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:21,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951106470] [2020-09-24 18:21:21,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:21,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:21,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:21,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:21,673 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-24 18:21:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:24,057 INFO L93 Difference]: Finished difference Result 1547 states and 2007 transitions. [2020-09-24 18:21:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:24,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-24 18:21:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:24,071 INFO L225 Difference]: With dead ends: 1547 [2020-09-24 18:21:24,071 INFO L226 Difference]: Without dead ends: 956 [2020-09-24 18:21:24,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-09-24 18:21:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 921. [2020-09-24 18:21:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-09-24 18:21:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1108 transitions. [2020-09-24 18:21:24,158 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1108 transitions. Word has length 173 [2020-09-24 18:21:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:24,160 INFO L479 AbstractCegarLoop]: Abstraction has 921 states and 1108 transitions. [2020-09-24 18:21:24,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1108 transitions. [2020-09-24 18:21:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 18:21:24,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:24,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:24,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:24,167 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:24,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1889998438, now seen corresponding path program 1 times [2020-09-24 18:21:24,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:24,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295990726] [2020-09-24 18:21:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:29,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 18:21:29,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:21:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 18:21:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 18:21:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:29,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:29,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:29,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:29,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:29,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:29,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:29,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:21:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 18:21:29,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:21:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:29,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295990726] [2020-09-24 18:21:29,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:29,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:29,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325814983] [2020-09-24 18:21:29,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:29,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:29,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:29,531 INFO L87 Difference]: Start difference. First operand 921 states and 1108 transitions. Second operand 5 states. [2020-09-24 18:21:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:31,653 INFO L93 Difference]: Finished difference Result 2177 states and 2727 transitions. [2020-09-24 18:21:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:31,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-24 18:21:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:31,664 INFO L225 Difference]: With dead ends: 2177 [2020-09-24 18:21:31,665 INFO L226 Difference]: Without dead ends: 1278 [2020-09-24 18:21:31,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-09-24 18:21:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1230. [2020-09-24 18:21:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-09-24 18:21:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1459 transitions. [2020-09-24 18:21:31,723 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1459 transitions. Word has length 177 [2020-09-24 18:21:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:31,723 INFO L479 AbstractCegarLoop]: Abstraction has 1230 states and 1459 transitions. [2020-09-24 18:21:31,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1459 transitions. [2020-09-24 18:21:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 18:21:31,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:31,736 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:31,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:31,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:31,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1631749271, now seen corresponding path program 1 times [2020-09-24 18:21:31,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:31,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220599191] [2020-09-24 18:21:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:21:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:36,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:36,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:36,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:36,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:36,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:36,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:21:36,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:21:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:21:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:37,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:21:37,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:21:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:21:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:37,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220599191] [2020-09-24 18:21:37,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:37,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:21:37,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639911690] [2020-09-24 18:21:37,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:21:37,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:37,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:21:37,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:21:37,171 INFO L87 Difference]: Start difference. First operand 1230 states and 1459 transitions. Second operand 8 states. [2020-09-24 18:21:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:39,947 INFO L93 Difference]: Finished difference Result 3112 states and 3938 transitions. [2020-09-24 18:21:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:21:39,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-24 18:21:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:39,958 INFO L225 Difference]: With dead ends: 3112 [2020-09-24 18:21:39,958 INFO L226 Difference]: Without dead ends: 1904 [2020-09-24 18:21:39,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:21:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-09-24 18:21:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1852. [2020-09-24 18:21:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1852 states. [2020-09-24 18:21:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2277 transitions. [2020-09-24 18:21:40,023 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2277 transitions. Word has length 201 [2020-09-24 18:21:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:40,023 INFO L479 AbstractCegarLoop]: Abstraction has 1852 states and 2277 transitions. [2020-09-24 18:21:40,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:21:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2277 transitions. [2020-09-24 18:21:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-24 18:21:40,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:40,031 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, 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] [2020-09-24 18:21:40,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:40,032 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:40,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1208700995, now seen corresponding path program 1 times [2020-09-24 18:21:40,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:40,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037510340] [2020-09-24 18:21:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 18:21:45,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:21:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:21:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 18:21:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:21:45,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:45,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:45,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:21:45,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:45,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:21:45,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:21:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:21:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:21:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:21:45,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:21:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:45,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037510340] [2020-09-24 18:21:45,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:45,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:45,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228813405] [2020-09-24 18:21:45,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:45,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:45,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:45,525 INFO L87 Difference]: Start difference. First operand 1852 states and 2277 transitions. Second operand 7 states. [2020-09-24 18:21:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:47,997 INFO L93 Difference]: Finished difference Result 4629 states and 5816 transitions. [2020-09-24 18:21:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:21:47,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-24 18:21:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:48,011 INFO L225 Difference]: With dead ends: 4629 [2020-09-24 18:21:48,011 INFO L226 Difference]: Without dead ends: 2432 [2020-09-24 18:21:48,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:21:48,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2020-09-24 18:21:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2272. [2020-09-24 18:21:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2272 states. [2020-09-24 18:21:48,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2678 transitions. [2020-09-24 18:21:48,087 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2678 transitions. Word has length 222 [2020-09-24 18:21:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:48,087 INFO L479 AbstractCegarLoop]: Abstraction has 2272 states and 2678 transitions. [2020-09-24 18:21:48,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2678 transitions. [2020-09-24 18:21:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-24 18:21:48,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:48,097 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:21:48,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:48,098 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash -348997285, now seen corresponding path program 1 times [2020-09-24 18:21:48,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:48,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580936582] [2020-09-24 18:21:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-24 18:21:49,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:21:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-09-24 18:21:49,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 18:21:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:21:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:49,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:21:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:21:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 18:21:49,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580936582] [2020-09-24 18:21:49,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:49,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:49,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157998578] [2020-09-24 18:21:49,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:49,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:49,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:49,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:49,999 INFO L87 Difference]: Start difference. First operand 2272 states and 2678 transitions. Second operand 5 states. [2020-09-24 18:21:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:51,786 INFO L93 Difference]: Finished difference Result 4375 states and 5161 transitions. [2020-09-24 18:21:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:51,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-09-24 18:21:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:51,792 INFO L225 Difference]: With dead ends: 4375 [2020-09-24 18:21:51,792 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:21:51,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:21:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:21:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:21:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:21:51,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 266 [2020-09-24 18:21:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:51,803 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:21:51,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:21:51,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:21:51,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:21:51,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:21:52,385 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 19 [2020-09-24 18:21:52,516 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 19