/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=NARROWEST --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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:14:02,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:14:02,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:14:02,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:14:02,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:14:02,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:14:02,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:14:02,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:14:02,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:14:02,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:14:02,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:14:02,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:14:02,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:14:02,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:14:02,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:14:02,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:14:02,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:14:02,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:14:02,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:14:02,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:14:02,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:14:02,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:14:02,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:14:02,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:14:02,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:14:02,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:14:02,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:14:02,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:14:02,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:14:02,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:14:02,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:14:02,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:14:02,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:14:02,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:14:02,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:14:02,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:14:02,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:14:02,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:14:02,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:14:02,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:14:02,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:14:02,861 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 02:14:02,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:14:02,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:14:02,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:14:02,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:14:02,898 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:14:02,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:14:02,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:14:02,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:14:02,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:14:02,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:14:02,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:14:02,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:14:02,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:14:02,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:14:02,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:14:02,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:14:02,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:14:02,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:14:02,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:14:02,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:14:02,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:14:02,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:14:02,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:14:02,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:14:02,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:14:02,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:14:02,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:14:02,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:14:02,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:14:02,903 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:14:03,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:14:03,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:14:03,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:14:03,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:14:03,481 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:14:03,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 02:14:03,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb55b6dab/5186249e4fe7444ca2d1f2bc45749751/FLAG38e58bd0d [2020-09-25 02:14:04,279 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:14:04,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 02:14:04,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb55b6dab/5186249e4fe7444ca2d1f2bc45749751/FLAG38e58bd0d [2020-09-25 02:14:04,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb55b6dab/5186249e4fe7444ca2d1f2bc45749751 [2020-09-25 02:14:04,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:14:04,478 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:14:04,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:14:04,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:14:04,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:14:04,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:14:04" (1/1) ... [2020-09-25 02:14:04,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:04, skipping insertion in model container [2020-09-25 02:14:04,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:14:04" (1/1) ... [2020-09-25 02:14:04,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:14:04,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:14:05,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:14:05,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:14:05,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:14:05,360 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:14:05,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05 WrapperNode [2020-09-25 02:14:05,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:14:05,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:14:05,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:14:05,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:14:05,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (1/1) ... [2020-09-25 02:14:05,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:14:05,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:14:05,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:14:05,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:14:05,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (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 02:14:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:14:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:14:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:14:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:14:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:14:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:14:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:14:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:14:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:14:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:14:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:14:07,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:14:07,179 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:14:07,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:14:07 BoogieIcfgContainer [2020-09-25 02:14:07,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:14:07,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:14:07,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:14:07,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:14:07,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:14:04" (1/3) ... [2020-09-25 02:14:07,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:14:07, skipping insertion in model container [2020-09-25 02:14:07,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:05" (2/3) ... [2020-09-25 02:14:07,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:14:07, skipping insertion in model container [2020-09-25 02:14:07,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:14:07" (3/3) ... [2020-09-25 02:14:07,199 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 02:14:07,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:14:07,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:14:07,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:14:07,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:14:07,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:14:07,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:14:07,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:14:07,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:14:07,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:14:07,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:14:07,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:14:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 02:14:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 02:14:07,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:07,330 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] [2020-09-25 02:14:07,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:07,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 02:14:07,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:07,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302305946] [2020-09-25 02:14:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:14:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-25 02:14:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:14:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:14:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:14:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:14:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:14:08,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:14:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:14:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:08,206 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 02:14:08,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302305946] [2020-09-25 02:14:08,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:14:08,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:14:08,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228265540] [2020-09-25 02:14:08,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:14:08,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:08,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:14:08,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:14:08,241 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 02:14:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:10,471 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 02:14:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:14:10,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 02:14:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:10,510 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 02:14:10,510 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 02:14:10,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:14:10,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 02:14:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 02:14:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 02:14:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 02:14:10,625 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 02:14:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:10,626 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 02:14:10,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:14:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 02:14:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 02:14:10,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:10,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:10,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:14:10,634 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:10,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 02:14:10,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:10,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118065219] [2020-09-25 02:14:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:12,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 02:14:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:14:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-09-25 02:14:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:14:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-25 02:14:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:14:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:14:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:12,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:14:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:14:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:12,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:12,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:14:12,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:12,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 02:14:12,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:14:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:14:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:12,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118065219] [2020-09-25 02:14:12,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:12,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:14:12,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588995917] [2020-09-25 02:14:12,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:14:12,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:12,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:14:12,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:14:12,901 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 02:14:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:14,979 INFO L93 Difference]: Finished difference Result 1235 states and 1577 transitions. [2020-09-25 02:14:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:14:14,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 02:14:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:14,985 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 02:14:14,985 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 02:14:14,989 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 02:14:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 02:14:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 697. [2020-09-25 02:14:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 02:14:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 855 transitions. [2020-09-25 02:14:15,028 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 855 transitions. Word has length 127 [2020-09-25 02:14:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:15,029 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 855 transitions. [2020-09-25 02:14:15,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:14:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 855 transitions. [2020-09-25 02:14:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 02:14:15,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:15,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:15,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:14:15,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 02:14:15,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:15,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178684465] [2020-09-25 02:14:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 02:14:19,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:14:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4847 [2020-09-25 02:14:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:14:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 02:14:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:14:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:20,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:14:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:20,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:14:20,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:20,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:20,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:20,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:14:20,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:20,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 02:14:20,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:20,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:14:20,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:20,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:14:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:20,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178684465] [2020-09-25 02:14:20,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:20,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:14:20,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806495489] [2020-09-25 02:14:20,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:14:20,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:20,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:14:20,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:14:20,546 INFO L87 Difference]: Start difference. First operand 697 states and 855 transitions. Second operand 8 states. [2020-09-25 02:14:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:25,465 INFO L93 Difference]: Finished difference Result 2604 states and 3387 transitions. [2020-09-25 02:14:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:14:25,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-25 02:14:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:25,534 INFO L225 Difference]: With dead ends: 2604 [2020-09-25 02:14:25,534 INFO L226 Difference]: Without dead ends: 1889 [2020-09-25 02:14:25,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:14:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-25 02:14:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1831. [2020-09-25 02:14:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2020-09-25 02:14:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2274 transitions. [2020-09-25 02:14:25,624 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2274 transitions. Word has length 136 [2020-09-25 02:14:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:25,625 INFO L479 AbstractCegarLoop]: Abstraction has 1831 states and 2274 transitions. [2020-09-25 02:14:25,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:14:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2274 transitions. [2020-09-25 02:14:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 02:14:25,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:25,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:25,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:14:25,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash 501111322, now seen corresponding path program 1 times [2020-09-25 02:14:25,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:25,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247636124] [2020-09-25 02:14:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:30,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 02:14:30,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:14:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 02:14:30,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:14:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 02:14:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:14:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:30,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:30,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:30,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:14:30,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:31,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:31,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 02:14:31,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:31,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 02:14:31,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:14:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 02:14:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:31,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247636124] [2020-09-25 02:14:31,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:31,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:14:31,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702177438] [2020-09-25 02:14:31,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:14:31,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:14:31,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:14:31,183 INFO L87 Difference]: Start difference. First operand 1831 states and 2274 transitions. Second operand 8 states. [2020-09-25 02:14:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:35,768 INFO L93 Difference]: Finished difference Result 4937 states and 6372 transitions. [2020-09-25 02:14:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:14:35,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-09-25 02:14:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:35,792 INFO L225 Difference]: With dead ends: 4937 [2020-09-25 02:14:35,792 INFO L226 Difference]: Without dead ends: 3095 [2020-09-25 02:14:35,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:14:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-09-25 02:14:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2895. [2020-09-25 02:14:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2895 states. [2020-09-25 02:14:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 3558 transitions. [2020-09-25 02:14:35,908 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 3558 transitions. Word has length 139 [2020-09-25 02:14:35,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:35,910 INFO L479 AbstractCegarLoop]: Abstraction has 2895 states and 3558 transitions. [2020-09-25 02:14:35,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:14:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 3558 transitions. [2020-09-25 02:14:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 02:14:35,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:35,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:35,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:14:35,918 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:35,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2120770880, now seen corresponding path program 1 times [2020-09-25 02:14:35,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:35,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014685486] [2020-09-25 02:14:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:37,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:14:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:14:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2952 [2020-09-25 02:14:38,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:14:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-09-25 02:14:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:14:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:39,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:39,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:14:39,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:39,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 02:14:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 02:14:39,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:14:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:14:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:39,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014685486] [2020-09-25 02:14:39,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:39,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:14:39,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241601131] [2020-09-25 02:14:39,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:14:39,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:39,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:14:39,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:14:39,273 INFO L87 Difference]: Start difference. First operand 2895 states and 3558 transitions. Second operand 6 states. [2020-09-25 02:14:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:41,824 INFO L93 Difference]: Finished difference Result 6147 states and 7657 transitions. [2020-09-25 02:14:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:14:41,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-09-25 02:14:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:41,841 INFO L225 Difference]: With dead ends: 6147 [2020-09-25 02:14:41,841 INFO L226 Difference]: Without dead ends: 3221 [2020-09-25 02:14:41,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:14:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2020-09-25 02:14:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 3191. [2020-09-25 02:14:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2020-09-25 02:14:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 3859 transitions. [2020-09-25 02:14:41,957 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 3859 transitions. Word has length 145 [2020-09-25 02:14:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:41,957 INFO L479 AbstractCegarLoop]: Abstraction has 3191 states and 3859 transitions. [2020-09-25 02:14:41,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:14:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 3859 transitions. [2020-09-25 02:14:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 02:14:41,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:41,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:41,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:14:41,962 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:41,963 INFO L82 PathProgramCache]: Analyzing trace with hash 342195782, now seen corresponding path program 1 times [2020-09-25 02:14:41,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:41,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767707924] [2020-09-25 02:14:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:45,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:45,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 02:14:45,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:14:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3690 [2020-09-25 02:14:45,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:14:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-25 02:14:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:14:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:45,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:45,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:45,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:14:45,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:45,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:46,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:14:46,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 02:14:46,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:14:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:14:46,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:46,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767707924] [2020-09-25 02:14:46,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:46,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:14:46,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618504038] [2020-09-25 02:14:46,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:14:46,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:46,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:14:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:14:46,358 INFO L87 Difference]: Start difference. First operand 3191 states and 3859 transitions. Second operand 8 states. [2020-09-25 02:14:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:49,538 INFO L93 Difference]: Finished difference Result 8178 states and 10215 transitions. [2020-09-25 02:14:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:14:49,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-09-25 02:14:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:49,566 INFO L225 Difference]: With dead ends: 8178 [2020-09-25 02:14:49,566 INFO L226 Difference]: Without dead ends: 4975 [2020-09-25 02:14:49,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:14:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2020-09-25 02:14:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4183. [2020-09-25 02:14:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4183 states. [2020-09-25 02:14:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 5189 transitions. [2020-09-25 02:14:49,706 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 5189 transitions. Word has length 155 [2020-09-25 02:14:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:49,706 INFO L479 AbstractCegarLoop]: Abstraction has 4183 states and 5189 transitions. [2020-09-25 02:14:49,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:14:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 5189 transitions. [2020-09-25 02:14:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 02:14:49,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:49,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:49,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:14:49,711 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash 6444598, now seen corresponding path program 1 times [2020-09-25 02:14:49,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:49,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060250577] [2020-09-25 02:14:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking...