/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=0.4 --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/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:42,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:42,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:42,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:42,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:42,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:42,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:42,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:42,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:42,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:42,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:42,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:42,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:42,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:42,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:42,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:42,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:42,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:42,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:42,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:42,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:42,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:42,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:42,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:42,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:42,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:42,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:42,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:42,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:42,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:42,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:42,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:42,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:42,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:42,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:42,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:42,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:42,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:42,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:42,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:42,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:42,388 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 05:39:42,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:42,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:42,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:42,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:42,448 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:42,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:42,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:42,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:42,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:42,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:42,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:42,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:42,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:42,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:42,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:42,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:42,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:42,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:42,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:42,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:42,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:42,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:42,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:42,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:42,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:42,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:42,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:42,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:42,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:42,455 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:39:42,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:42,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:42,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:42,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:42,954 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:42,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 05:39:43,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9b1ff4c1/3e4113b5f903482ab64deabea3d2bc0f/FLAG69ef8029f [2020-09-25 05:39:43,734 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:43,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 05:39:43,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9b1ff4c1/3e4113b5f903482ab64deabea3d2bc0f/FLAG69ef8029f [2020-09-25 05:39:43,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9b1ff4c1/3e4113b5f903482ab64deabea3d2bc0f [2020-09-25 05:39:43,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:43,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:43,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:43,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:43,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:43,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3028f779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43, skipping insertion in model container [2020-09-25 05:39:43,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:44,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:44,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:44,758 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:44,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:44,939 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:44,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44 WrapperNode [2020-09-25 05:39:44,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:44,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:44,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:44,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:44,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:44,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:44,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:44,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:45,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:45,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:45,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:45,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:45,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:45,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:45,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:45,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (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 05:39:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:47,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:47,734 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:47,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:47 BoogieIcfgContainer [2020-09-25 05:39:47,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:47,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:47,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:47,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:47,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:43" (1/3) ... [2020-09-25 05:39:47,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388d37d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:47, skipping insertion in model container [2020-09-25 05:39:47,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44" (2/3) ... [2020-09-25 05:39:47,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388d37d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:47, skipping insertion in model container [2020-09-25 05:39:47,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:47" (3/3) ... [2020-09-25 05:39:47,757 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 05:39:47,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:47,781 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:47,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:47,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:47,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:47,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:47,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:47,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:47,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:47,844 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:47,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 05:39:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:39:47,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:47,899 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] [2020-09-25 05:39:47,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 05:39:47,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:47,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174668884] [2020-09-25 05:39:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:49,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:39:49,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-25 05:39:49,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:49,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:39:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:39:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:49,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:39:49,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:39:49,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:49,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:49,347 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 05:39:49,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174668884] [2020-09-25 05:39:49,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:49,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:39:49,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008481988] [2020-09-25 05:39:49,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:49,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:49,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:49,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:49,389 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 05:39:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:54,747 INFO L93 Difference]: Finished difference Result 2231 states and 3021 transitions. [2020-09-25 05:39:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:39:54,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 05:39:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:54,792 INFO L225 Difference]: With dead ends: 2231 [2020-09-25 05:39:54,793 INFO L226 Difference]: Without dead ends: 1325 [2020-09-25 05:39:54,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-09-25 05:39:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 997. [2020-09-25 05:39:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 05:39:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 05:39:54,941 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 34 [2020-09-25 05:39:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:54,941 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 05:39:54,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 05:39:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 05:39:54,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:54,948 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:39:54,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:54,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 05:39:54,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:54,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95271964] [2020-09-25 05:39:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 05:39:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:39:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3372 [2020-09-25 05:39:58,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:58,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 05:39:58,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:39:58,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:39:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:39:58,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:39:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:39:58,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 05:39:58,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:39:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:58,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95271964] [2020-09-25 05:39:58,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:58,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:58,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539421524] [2020-09-25 05:39:58,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:58,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:58,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:58,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:58,780 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 5 states. [2020-09-25 05:40:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:02,117 INFO L93 Difference]: Finished difference Result 2020 states and 2477 transitions. [2020-09-25 05:40:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:02,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 05:40:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:02,127 INFO L225 Difference]: With dead ends: 2020 [2020-09-25 05:40:02,127 INFO L226 Difference]: Without dead ends: 1286 [2020-09-25 05:40:02,130 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 05:40:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-09-25 05:40:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1243. [2020-09-25 05:40:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-25 05:40:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1537 transitions. [2020-09-25 05:40:02,186 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1537 transitions. Word has length 116 [2020-09-25 05:40:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:02,189 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1537 transitions. [2020-09-25 05:40:02,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1537 transitions. [2020-09-25 05:40:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 05:40:02,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:02,200 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:40:02,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:02,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash 641101782, now seen corresponding path program 1 times [2020-09-25 05:40:02,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645183868] [2020-09-25 05:40:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 05:40:07,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:40:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:40:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:40:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:07,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:07,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:07,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:40:07,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:07,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:40:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:40:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:40:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:07,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645183868] [2020-09-25 05:40:07,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:07,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:07,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206876324] [2020-09-25 05:40:07,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:07,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:07,613 INFO L87 Difference]: Start difference. First operand 1243 states and 1537 transitions. Second operand 6 states. [2020-09-25 05:40:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:12,864 INFO L93 Difference]: Finished difference Result 4029 states and 5245 transitions. [2020-09-25 05:40:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:12,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-09-25 05:40:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:12,888 INFO L225 Difference]: With dead ends: 4029 [2020-09-25 05:40:12,889 INFO L226 Difference]: Without dead ends: 2803 [2020-09-25 05:40:12,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2020-09-25 05:40:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2236. [2020-09-25 05:40:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-09-25 05:40:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2899 transitions. [2020-09-25 05:40:12,988 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2899 transitions. Word has length 118 [2020-09-25 05:40:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:12,989 INFO L479 AbstractCegarLoop]: Abstraction has 2236 states and 2899 transitions. [2020-09-25 05:40:12,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2899 transitions. [2020-09-25 05:40:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 05:40:12,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:12,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:12,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:12,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1390780622, now seen corresponding path program 1 times [2020-09-25 05:40:12,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:13,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645578235] [2020-09-25 05:40:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:15,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 05:40:15,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2645 [2020-09-25 05:40:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:15,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 05:40:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:40:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:15,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:15,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:15,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 05:40:15,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:15,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 05:40:15,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:15,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:16,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645578235] [2020-09-25 05:40:16,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:16,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:16,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056581860] [2020-09-25 05:40:16,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:16,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:16,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:16,022 INFO L87 Difference]: Start difference. First operand 2236 states and 2899 transitions. Second operand 5 states. [2020-09-25 05:40:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:19,874 INFO L93 Difference]: Finished difference Result 6063 states and 8177 transitions. [2020-09-25 05:40:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:19,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 05:40:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:19,898 INFO L225 Difference]: With dead ends: 6063 [2020-09-25 05:40:19,898 INFO L226 Difference]: Without dead ends: 3844 [2020-09-25 05:40:19,911 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 05:40:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2020-09-25 05:40:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3613. [2020-09-25 05:40:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-09-25 05:40:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4767 transitions. [2020-09-25 05:40:20,059 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4767 transitions. Word has length 145 [2020-09-25 05:40:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:20,061 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 4767 transitions. [2020-09-25 05:40:20,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4767 transitions. [2020-09-25 05:40:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:40:20,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:20,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:20,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:20,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1990561064, now seen corresponding path program 1 times [2020-09-25 05:40:20,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:20,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709176846] [2020-09-25 05:40:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:23,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 05:40:23,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:40:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3693 [2020-09-25 05:40:23,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:23,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 05:40:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:40:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:23,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:23,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:40:23,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:23,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 05:40:24,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 05:40:24,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 05:40:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:40:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:24,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709176846] [2020-09-25 05:40:24,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:24,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:24,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596764976] [2020-09-25 05:40:24,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:24,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:24,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:24,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:24,333 INFO L87 Difference]: Start difference. First operand 3613 states and 4767 transitions. Second operand 5 states. [2020-09-25 05:40:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:27,433 INFO L93 Difference]: Finished difference Result 9012 states and 12251 transitions. [2020-09-25 05:40:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:27,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 05:40:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:27,475 INFO L225 Difference]: With dead ends: 9012 [2020-09-25 05:40:27,475 INFO L226 Difference]: Without dead ends: 5416 [2020-09-25 05:40:27,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2020-09-25 05:40:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5000. [2020-09-25 05:40:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5000 states. [2020-09-25 05:40:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 6437 transitions. [2020-09-25 05:40:27,713 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 6437 transitions. Word has length 182 [2020-09-25 05:40:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:27,714 INFO L479 AbstractCegarLoop]: Abstraction has 5000 states and 6437 transitions. [2020-09-25 05:40:27,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 6437 transitions. [2020-09-25 05:40:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 05:40:27,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:27,722 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:27,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:27,723 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1860749700, now seen corresponding path program 1 times [2020-09-25 05:40:27,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:27,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214729907] [2020-09-25 05:40:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking...