/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:08,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:08,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:08,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:08,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:08,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:08,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:08,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:08,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:08,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:08,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:08,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:08,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:08,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:08,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:08,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:08,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:08,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:08,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:08,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:08,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:08,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:08,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:08,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:08,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:08,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:08,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:08,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:08,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:08,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:08,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:08,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:08,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:08,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:08,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:08,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:08,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:08,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:08,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:08,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:08,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:08,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:30:08,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:08,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:08,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:08,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:08,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:08,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:08,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:08,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:08,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:08,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:08,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:08,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:08,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:08,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:08,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:08,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:08,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:08,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:08,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:08,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:08,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:08,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:08,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:08,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:08,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:08,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:08,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:08,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:08,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:08,794 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:30:09,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:09,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:09,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:09,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:09,274 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:09,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 04:30:09,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca687392/f55574983fe24efc97fc07e7762e6ab2/FLAG9fa179a08 [2020-09-25 04:30:10,002 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:10,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 04:30:10,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca687392/f55574983fe24efc97fc07e7762e6ab2/FLAG9fa179a08 [2020-09-25 04:30:10,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca687392/f55574983fe24efc97fc07e7762e6ab2 [2020-09-25 04:30:10,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:10,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:10,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:10,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:10,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:10,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:10" (1/1) ... [2020-09-25 04:30:10,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7decd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:10, skipping insertion in model container [2020-09-25 04:30:10,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:10" (1/1) ... [2020-09-25 04:30:10,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:10,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:10,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:10,984 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:11,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:11,145 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:11,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11 WrapperNode [2020-09-25 04:30:11,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:11,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:11,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:11,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:11,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... [2020-09-25 04:30:11,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:11,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:11,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:11,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:11,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:12,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:12,834 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:12,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:12 BoogieIcfgContainer [2020-09-25 04:30:12,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:12,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:12,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:12,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:10" (1/3) ... [2020-09-25 04:30:12,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e615dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:12, skipping insertion in model container [2020-09-25 04:30:12,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:11" (2/3) ... [2020-09-25 04:30:12,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e615dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:12, skipping insertion in model container [2020-09-25 04:30:12,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:12" (3/3) ... [2020-09-25 04:30:12,860 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2020-09-25 04:30:12,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:12,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:12,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:12,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:12,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:12,942 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:12,942 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:12,942 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:12,942 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:12,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:12,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 04:30:12,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:12,983 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] [2020-09-25 04:30:12,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:12,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1927363665, now seen corresponding path program 1 times [2020-09-25 04:30:13,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:13,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188257104] [2020-09-25 04:30:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:13,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:30:13,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:30:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-25 04:30:13,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:13,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:30:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:30:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:30:14,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:14,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:30:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:14,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188257104] [2020-09-25 04:30:14,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:14,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:14,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453485043] [2020-09-25 04:30:14,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:14,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:14,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:14,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:14,149 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:16,158 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 04:30:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:16,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-25 04:30:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:16,189 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 04:30:16,189 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 04:30:16,200 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 [2020-09-25 04:30:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 04:30:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 04:30:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 04:30:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 04:30:16,298 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 44 [2020-09-25 04:30:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:16,299 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 04:30:16,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 04:30:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 04:30:16,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:16,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:16,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:16,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:16,309 INFO L82 PathProgramCache]: Analyzing trace with hash -739682472, now seen corresponding path program 1 times [2020-09-25 04:30:16,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:16,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432816961] [2020-09-25 04:30:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:17,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 04:30:17,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-09-25 04:30:17,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:17,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:30:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:18,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:18,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:18,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:18,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 04:30:18,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:18,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:18,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432816961] [2020-09-25 04:30:18,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:18,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:18,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371855427] [2020-09-25 04:30:18,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:18,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:18,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:18,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:18,250 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 04:30:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:20,386 INFO L93 Difference]: Finished difference Result 1419 states and 1830 transitions. [2020-09-25 04:30:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:20,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-09-25 04:30:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:20,394 INFO L225 Difference]: With dead ends: 1419 [2020-09-25 04:30:20,394 INFO L226 Difference]: Without dead ends: 891 [2020-09-25 04:30:20,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-25 04:30:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2020-09-25 04:30:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-09-25 04:30:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1047 transitions. [2020-09-25 04:30:20,449 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1047 transitions. Word has length 124 [2020-09-25 04:30:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:20,450 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 1047 transitions. [2020-09-25 04:30:20,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1047 transitions. [2020-09-25 04:30:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:30:20,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:20,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:20,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:20,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:20,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1991578147, now seen corresponding path program 1 times [2020-09-25 04:30:20,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:20,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113230398] [2020-09-25 04:30:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:30:25,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4648 [2020-09-25 04:30:25,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:30:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:25,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 04:30:25,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:25,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113230398] [2020-09-25 04:30:25,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:25,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:25,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185909001] [2020-09-25 04:30:25,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:25,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:25,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:25,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:25,409 INFO L87 Difference]: Start difference. First operand 850 states and 1047 transitions. Second operand 5 states. [2020-09-25 04:30:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:27,420 INFO L93 Difference]: Finished difference Result 2345 states and 3013 transitions. [2020-09-25 04:30:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:27,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 04:30:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:27,436 INFO L225 Difference]: With dead ends: 2345 [2020-09-25 04:30:27,436 INFO L226 Difference]: Without dead ends: 1510 [2020-09-25 04:30:27,440 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 [2020-09-25 04:30:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2020-09-25 04:30:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1458. [2020-09-25 04:30:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-09-25 04:30:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1774 transitions. [2020-09-25 04:30:27,522 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1774 transitions. Word has length 133 [2020-09-25 04:30:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:27,529 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1774 transitions. [2020-09-25 04:30:27,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1774 transitions. [2020-09-25 04:30:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:30:27,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:27,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:27,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:27,544 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:27,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1945552283, now seen corresponding path program 1 times [2020-09-25 04:30:27,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:27,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800389723] [2020-09-25 04:30:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:30,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 04:30:30,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3078 [2020-09-25 04:30:30,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:30,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:30:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:30:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:30,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:30,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:30,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:30,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:30,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:30,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:30:30,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 04:30:30,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:30,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:30,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800389723] [2020-09-25 04:30:30,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:30,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:30,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807764398] [2020-09-25 04:30:30,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:30,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:30,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:30,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:30,996 INFO L87 Difference]: Start difference. First operand 1458 states and 1774 transitions. Second operand 5 states. [2020-09-25 04:30:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:32,696 INFO L93 Difference]: Finished difference Result 3541 states and 4444 transitions. [2020-09-25 04:30:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:32,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 04:30:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:32,715 INFO L225 Difference]: With dead ends: 3541 [2020-09-25 04:30:32,716 INFO L226 Difference]: Without dead ends: 2098 [2020-09-25 04:30:32,720 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 [2020-09-25 04:30:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-09-25 04:30:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2068. [2020-09-25 04:30:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-09-25 04:30:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2462 transitions. [2020-09-25 04:30:32,789 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2462 transitions. Word has length 135 [2020-09-25 04:30:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:32,790 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2462 transitions. [2020-09-25 04:30:32,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2462 transitions. [2020-09-25 04:30:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 04:30:32,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:32,798 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:32,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:32,798 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:32,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1157417370, now seen corresponding path program 1 times [2020-09-25 04:30:32,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:32,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904219361] [2020-09-25 04:30:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:37,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 04:30:37,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:30:37,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:37,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:30:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:37,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:37,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:37,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:37,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:38,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:38,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:38,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 04:30:38,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:38,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:38,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:38,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 04:30:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:38,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:38,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904219361] [2020-09-25 04:30:38,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:38,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:38,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681170647] [2020-09-25 04:30:38,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:38,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:38,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:38,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:38,401 INFO L87 Difference]: Start difference. First operand 2068 states and 2462 transitions. Second operand 7 states. [2020-09-25 04:30:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:40,685 INFO L93 Difference]: Finished difference Result 4665 states and 5693 transitions. [2020-09-25 04:30:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:40,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 04:30:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:40,700 INFO L225 Difference]: With dead ends: 4665 [2020-09-25 04:30:40,700 INFO L226 Difference]: Without dead ends: 1818 [2020-09-25 04:30:40,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-09-25 04:30:40,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1746. [2020-09-25 04:30:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-09-25 04:30:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2032 transitions. [2020-09-25 04:30:40,776 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2032 transitions. Word has length 216 [2020-09-25 04:30:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:40,777 INFO L479 AbstractCegarLoop]: Abstraction has 1746 states and 2032 transitions. [2020-09-25 04:30:40,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2032 transitions. [2020-09-25 04:30:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 04:30:40,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:40,782 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:40,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:40,782 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:40,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1622052799, now seen corresponding path program 1 times [2020-09-25 04:30:40,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:40,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860756669] [2020-09-25 04:30:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:40,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 04:30:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:30:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:45,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:30:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:45,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:45,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:30:45,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:45,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:45,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:46,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:46,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:30:46,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:46,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:46,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:46,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:30:46,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 04:30:46,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:46,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:30:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:46,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860756669] [2020-09-25 04:30:46,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:46,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:46,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279136557] [2020-09-25 04:30:46,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:46,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:46,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:46,473 INFO L87 Difference]: Start difference. First operand 1746 states and 2032 transitions. Second operand 7 states. [2020-09-25 04:30:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:48,707 INFO L93 Difference]: Finished difference Result 4001 states and 4778 transitions. [2020-09-25 04:30:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:30:48,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-25 04:30:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:48,720 INFO L225 Difference]: With dead ends: 4001 [2020-09-25 04:30:48,721 INFO L226 Difference]: Without dead ends: 2270 [2020-09-25 04:30:48,726 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 [2020-09-25 04:30:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2020-09-25 04:30:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2094. [2020-09-25 04:30:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-09-25 04:30:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2413 transitions. [2020-09-25 04:30:48,785 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2413 transitions. Word has length 231 [2020-09-25 04:30:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:48,785 INFO L479 AbstractCegarLoop]: Abstraction has 2094 states and 2413 transitions. [2020-09-25 04:30:48,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2413 transitions. [2020-09-25 04:30:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 04:30:48,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:48,792 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:48,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:48,792 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:48,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:48,793 INFO L82 PathProgramCache]: Analyzing trace with hash 322649933, now seen corresponding path program 1 times [2020-09-25 04:30:48,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:48,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925743353] [2020-09-25 04:30:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 04:30:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:30:53,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:30:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 04:30:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:53,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:53,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:53,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:30:54,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 04:30:54,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 04:30:54,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:54,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 04:30:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 04:30:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 04:30:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 04:30:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:54,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925743353] [2020-09-25 04:30:54,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:54,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:54,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761795545] [2020-09-25 04:30:54,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:54,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:54,504 INFO L87 Difference]: Start difference. First operand 2094 states and 2413 transitions. Second operand 7 states. [2020-09-25 04:30:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:56,978 INFO L93 Difference]: Finished difference Result 4826 states and 5790 transitions. [2020-09-25 04:30:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:56,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-09-25 04:30:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:56,995 INFO L225 Difference]: With dead ends: 4826 [2020-09-25 04:30:56,995 INFO L226 Difference]: Without dead ends: 2747 [2020-09-25 04:30:57,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2020-09-25 04:30:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2560. [2020-09-25 04:30:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2560 states. [2020-09-25 04:30:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 2951 transitions. [2020-09-25 04:30:57,113 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 2951 transitions. Word has length 259 [2020-09-25 04:30:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:57,114 INFO L479 AbstractCegarLoop]: Abstraction has 2560 states and 2951 transitions. [2020-09-25 04:30:57,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 2951 transitions. [2020-09-25 04:30:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 04:30:57,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:57,126 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:57,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:30:57,127 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1369601077, now seen corresponding path program 1 times [2020-09-25 04:30:57,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:57,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063411675] [2020-09-25 04:30:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking...