/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:58,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:58,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:58,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:58,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:58,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:58,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:58,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:58,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:58,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:58,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:58,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:58,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:58,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:58,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:58,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:58,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:58,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:58,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:58,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:58,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:58,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:58,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:58,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:58,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:58,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:58,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:58,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:58,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:58,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:58,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:58,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:58,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:58,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:58,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:58,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:58,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:58,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:58,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:58,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:58,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:58,910 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 14:36:58,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:58,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:58,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:58,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:58,937 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:58,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:58,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:58,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:58,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:58,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:58,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:58,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:58,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:58,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:58,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:58,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:58,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:58,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:58,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:58,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:58,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:58,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:58,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:58,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:58,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:58,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:58,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:58,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:58,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:58,942 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:59,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:59,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:59,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:59,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:59,441 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:59,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 14:36:59,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3db8c105e/4fb2a717793543e9876f88cb2feb1800/FLAGc093cad2b [2020-09-25 14:37:00,215 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:00,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 14:37:00,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3db8c105e/4fb2a717793543e9876f88cb2feb1800/FLAGc093cad2b [2020-09-25 14:37:00,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3db8c105e/4fb2a717793543e9876f88cb2feb1800 [2020-09-25 14:37:00,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:00,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:00,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:00,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:00,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:00,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:00" (1/1) ... [2020-09-25 14:37:00,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:00, skipping insertion in model container [2020-09-25 14:37:00,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:00" (1/1) ... [2020-09-25 14:37:00,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:00,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:00,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:01,012 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:01,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:01,318 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:01,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01 WrapperNode [2020-09-25 14:37:01,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:01,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:01,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:01,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:01,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:01,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:01,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:01,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:01,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (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 14:37:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:02,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:02,924 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:02,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:02 BoogieIcfgContainer [2020-09-25 14:37:02,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:02,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:02,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:02,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:02,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:00" (1/3) ... [2020-09-25 14:37:02,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:02, skipping insertion in model container [2020-09-25 14:37:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (2/3) ... [2020-09-25 14:37:02,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:02, skipping insertion in model container [2020-09-25 14:37:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:02" (3/3) ... [2020-09-25 14:37:02,948 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 14:37:02,961 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:02,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:02,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:03,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:03,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:03,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:03,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:03,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:03,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:03,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:03,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 14:37:03,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:03,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:03,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:03,101 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 14:37:03,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:03,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 14:37:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:37:08,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:37:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:37:08,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:37:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:37:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:37:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 14:37:08,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:37:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:08,769 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 14:37:08,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 14:37:08,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:08,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:08,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328655315] [2020-09-25 14:37:08,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:08,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:08,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:08,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:08,805 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:11,021 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 14:37:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:11,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 14:37:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:11,050 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 14:37:11,050 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 14:37:11,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:11,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 14:37:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 14:37:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 14:37:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 14:37:11,181 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 14:37:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:11,182 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 14:37:11,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 14:37:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 14:37:11,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:11,190 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:37:11,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:11,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 14:37:11,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:11,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887913286] [2020-09-25 14:37:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 14:37:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:37:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 14:37:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:37:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:37:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:37:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:37:16,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:37:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:37:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:16,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887913286] [2020-09-25 14:37:16,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:16,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:16,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211084601] [2020-09-25 14:37:16,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:16,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:16,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:16,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:16,563 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 14:37:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:18,666 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-25 14:37:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:18,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 14:37:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:18,680 INFO L225 Difference]: With dead ends: 1688 [2020-09-25 14:37:18,680 INFO L226 Difference]: Without dead ends: 1048 [2020-09-25 14:37:18,684 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 14:37:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-25 14:37:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-25 14:37:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 14:37:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-25 14:37:18,729 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 154 [2020-09-25 14:37:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:18,730 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-25 14:37:18,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-25 14:37:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 14:37:18,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:18,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:18,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:18,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 14:37:18,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:18,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598130476] [2020-09-25 14:37:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:23,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 14:37:23,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:37:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:23,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:37:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 14:37:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:37:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:24,588 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-09-25 14:37:24,840 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-09-25 14:37:25,155 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2020-09-25 14:37:25,378 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2020-09-25 14:37:25,573 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-09-25 14:37:25,792 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 38 [2020-09-25 14:37:25,972 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 34 [2020-09-25 14:37:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:26,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:26,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:26,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:26,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:37:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:26,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:26,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 14:37:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:26,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:37:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:37:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:37:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:37:26,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598130476] [2020-09-25 14:37:26,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:26,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:37:26,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127502977] [2020-09-25 14:37:26,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:37:26,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:37:26,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:37:26,537 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 14 states. [2020-09-25 14:37:27,292 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 14:37:27,472 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-09-25 14:37:27,914 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-09-25 14:37:28,445 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2020-09-25 14:37:28,871 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2020-09-25 14:37:29,123 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-09-25 14:37:30,170 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 105 [2020-09-25 14:37:30,435 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-09-25 14:37:31,547 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2020-09-25 14:37:32,327 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-09-25 14:37:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:32,663 INFO L93 Difference]: Finished difference Result 2055 states and 2608 transitions. [2020-09-25 14:37:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:37:32,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-25 14:37:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:32,671 INFO L225 Difference]: With dead ends: 2055 [2020-09-25 14:37:32,671 INFO L226 Difference]: Without dead ends: 1129 [2020-09-25 14:37:32,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:37:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-09-25 14:37:32,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1031. [2020-09-25 14:37:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-09-25 14:37:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1248 transitions. [2020-09-25 14:37:32,727 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1248 transitions. Word has length 175 [2020-09-25 14:37:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:32,727 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1248 transitions. [2020-09-25 14:37:32,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:37:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1248 transitions. [2020-09-25 14:37:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 14:37:32,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:32,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:32,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:32,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash -42825726, now seen corresponding path program 1 times [2020-09-25 14:37:32,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:32,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421168479] [2020-09-25 14:37:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:37,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 14:37:37,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:37:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 14:37:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:37,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 14:37:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 14:37:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:37:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:37:37,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:37,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:37,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:38,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:37:38,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 14:37:38,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:38,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:37:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:38,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421168479] [2020-09-25 14:37:38,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:38,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:38,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988200215] [2020-09-25 14:37:38,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:38,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:38,133 INFO L87 Difference]: Start difference. First operand 1031 states and 1248 transitions. Second operand 5 states. [2020-09-25 14:37:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:40,058 INFO L93 Difference]: Finished difference Result 2477 states and 3089 transitions. [2020-09-25 14:37:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:40,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 14:37:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:40,069 INFO L225 Difference]: With dead ends: 2477 [2020-09-25 14:37:40,069 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 14:37:40,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 14:37:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 14:37:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2020-09-25 14:37:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 14:37:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1156 transitions. [2020-09-25 14:37:40,115 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1156 transitions. Word has length 180 [2020-09-25 14:37:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:40,116 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1156 transitions. [2020-09-25 14:37:40,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1156 transitions. [2020-09-25 14:37:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 14:37:40,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:40,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:40,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:40,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash 933949299, now seen corresponding path program 1 times [2020-09-25 14:37:40,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:40,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965051038] [2020-09-25 14:37:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 14:37:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:37:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:37:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 14:37:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:37:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:45,716 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-09-25 14:37:45,892 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-09-25 14:37:46,044 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-09-25 14:37:46,191 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2020-09-25 14:37:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:37:46,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:46,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:46,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:37:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:37:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:37:46,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:37:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:37:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:37:46,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965051038] [2020-09-25 14:37:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:46,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:37:46,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882231856] [2020-09-25 14:37:46,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:37:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:37:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:37:46,839 INFO L87 Difference]: Start difference. First operand 965 states and 1156 transitions. Second operand 16 states. [2020-09-25 14:37:47,575 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 14:37:47,784 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-25 14:37:48,478 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-09-25 14:37:49,483 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109