/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:20,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:20,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:20,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:20,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:20,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:20,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:20,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:20,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:20,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:20,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:20,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:20,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:20,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:20,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:20,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:20,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:20,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:20,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:20,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:20,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:20,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:20,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:20,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:20,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:20,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:20,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:20,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:20,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:20,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:20,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:20,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:20,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:20,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:20,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:20,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:20,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:20,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:20,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:20,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:20,926 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 06:48:20,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:20,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:20,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:20,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:20,973 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:20,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:20,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:20,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:20,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:20,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:20,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:20,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:20,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:20,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:20,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:20,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:20,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:20,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:20,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:20,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:20,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:20,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:20,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:20,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:20,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:20,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:20,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:20,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:20,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:20,979 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:48:21,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:21,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:21,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:21,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:21,497 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:21,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 06:48:21,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597df05c3/48e45645bf4644f2aab316a1316f05f5/FLAG3ebcbe163 [2020-09-25 06:48:22,303 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:22,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 06:48:22,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597df05c3/48e45645bf4644f2aab316a1316f05f5/FLAG3ebcbe163 [2020-09-25 06:48:22,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597df05c3/48e45645bf4644f2aab316a1316f05f5 [2020-09-25 06:48:22,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:22,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:22,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:22,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:22,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:22,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:22" (1/1) ... [2020-09-25 06:48:22,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:22, skipping insertion in model container [2020-09-25 06:48:22,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:22" (1/1) ... [2020-09-25 06:48:22,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:22,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:23,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:23,220 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:23,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:23,366 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:23,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23 WrapperNode [2020-09-25 06:48:23,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:23,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:23,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:23,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:23,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (1/1) ... [2020-09-25 06:48:23,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:23,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:23,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:23,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:23,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (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 06:48:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:25,154 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:25,155 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:25,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:25 BoogieIcfgContainer [2020-09-25 06:48:25,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:25,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:25,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:25,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:25,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:22" (1/3) ... [2020-09-25 06:48:25,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e1548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:25, skipping insertion in model container [2020-09-25 06:48:25,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:23" (2/3) ... [2020-09-25 06:48:25,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e1548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:25, skipping insertion in model container [2020-09-25 06:48:25,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:25" (3/3) ... [2020-09-25 06:48:25,174 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 06:48:25,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:25,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:25,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:25,256 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:25,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:25,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:25,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:25,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:25,257 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:25,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:25,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:48:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:48:25,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:25,315 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] [2020-09-25 06:48:25,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 06:48:25,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:25,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945193443] [2020-09-25 06:48:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:48:26,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-09-25 06:48:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:48:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:48:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:26,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:48:26,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:26,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:26,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:48:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:26,813 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 06:48:26,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945193443] [2020-09-25 06:48:26,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:26,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:48:26,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166555526] [2020-09-25 06:48:26,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:26,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:26,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:26,847 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:48:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:30,169 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 06:48:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:48:30,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 06:48:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:30,201 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 06:48:30,201 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 06:48:30,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 06:48:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 06:48:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 06:48:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 06:48:30,330 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 06:48:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:30,331 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 06:48:30,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 06:48:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 06:48:30,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:30,341 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, 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] [2020-09-25 06:48:30,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:30,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:30,342 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 06:48:30,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:30,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550482877] [2020-09-25 06:48:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:48:33,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2984 [2020-09-25 06:48:33,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:48:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:33,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:33,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:48:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:48:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:33,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550482877] [2020-09-25 06:48:33,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:33,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:48:33,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257059773] [2020-09-25 06:48:33,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:33,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:33,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:33,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:33,660 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 06:48:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:35,528 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 06:48:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:48:35,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 06:48:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:35,541 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 06:48:35,541 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 06:48:35,545 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 06:48:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 06:48:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 06:48:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 06:48:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 06:48:35,619 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 148 [2020-09-25 06:48:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:35,620 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 06:48:35,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 06:48:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:48:35,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:35,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:35,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:35,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash -379911190, now seen corresponding path program 1 times [2020-09-25 06:48:35,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:35,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067117370] [2020-09-25 06:48:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:37,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:48:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-09-25 06:48:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:37,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:48:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:37,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:48:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:37,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:37,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:48:37,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 06:48:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:37,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:37,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067117370] [2020-09-25 06:48:37,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:37,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:37,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073587832] [2020-09-25 06:48:37,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:37,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:37,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:37,645 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 7 states. [2020-09-25 06:48:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:39,921 INFO L93 Difference]: Finished difference Result 2568 states and 3464 transitions. [2020-09-25 06:48:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:39,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 06:48:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:39,937 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 06:48:39,937 INFO L226 Difference]: Without dead ends: 1694 [2020-09-25 06:48:39,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-09-25 06:48:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1660. [2020-09-25 06:48:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2020-09-25 06:48:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2039 transitions. [2020-09-25 06:48:40,032 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2039 transitions. Word has length 160 [2020-09-25 06:48:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:40,033 INFO L479 AbstractCegarLoop]: Abstraction has 1660 states and 2039 transitions. [2020-09-25 06:48:40,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2039 transitions. [2020-09-25 06:48:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 06:48:40,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:40,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:40,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:40,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:40,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 06:48:40,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:40,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739054054] [2020-09-25 06:48:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:45,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:45,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 06:48:45,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:48:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:48:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:45,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:48:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:48:45,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:45,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:45,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:45,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:45,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:45,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:45,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:45,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:45,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:45,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:45,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:45,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:45,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 06:48:45,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:45,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:48:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:45,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:45,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:45,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 06:48:45,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:45,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 06:48:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:45,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739054054] [2020-09-25 06:48:45,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:45,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:48:45,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468341439] [2020-09-25 06:48:45,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:45,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:45,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:45,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:45,742 INFO L87 Difference]: Start difference. First operand 1660 states and 2039 transitions. Second operand 8 states. [2020-09-25 06:48:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:49,195 INFO L93 Difference]: Finished difference Result 4481 states and 5921 transitions. [2020-09-25 06:48:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:48:49,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-09-25 06:48:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:49,216 INFO L225 Difference]: With dead ends: 4481 [2020-09-25 06:48:49,217 INFO L226 Difference]: Without dead ends: 2986 [2020-09-25 06:48:49,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:48:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-09-25 06:48:49,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2937. [2020-09-25 06:48:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2937 states. [2020-09-25 06:48:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3837 transitions. [2020-09-25 06:48:49,331 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3837 transitions. Word has length 237 [2020-09-25 06:48:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:49,332 INFO L479 AbstractCegarLoop]: Abstraction has 2937 states and 3837 transitions. [2020-09-25 06:48:49,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3837 transitions. [2020-09-25 06:48:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 06:48:49,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:49,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:49,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:49,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 06:48:49,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:49,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293358971] [2020-09-25 06:48:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 06:48:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:48:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:48:54,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:54,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:54,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:48:54,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:54,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:54,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:54,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:48:54,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:54,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 06:48:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:54,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293358971] [2020-09-25 06:48:54,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:54,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:54,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503597728] [2020-09-25 06:48:54,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:54,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:54,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:54,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:54,928 INFO L87 Difference]: Start difference. First operand 2937 states and 3837 transitions. Second operand 7 states. [2020-09-25 06:48:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:57,587 INFO L93 Difference]: Finished difference Result 6559 states and 8997 transitions. [2020-09-25 06:48:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:57,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-25 06:48:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:57,609 INFO L225 Difference]: With dead ends: 6559 [2020-09-25 06:48:57,609 INFO L226 Difference]: Without dead ends: 3153 [2020-09-25 06:48:57,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2020-09-25 06:48:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2781. [2020-09-25 06:48:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2781 states. [2020-09-25 06:48:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3579 transitions. [2020-09-25 06:48:57,711 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3579 transitions. Word has length 241 [2020-09-25 06:48:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:57,711 INFO L479 AbstractCegarLoop]: Abstraction has 2781 states and 3579 transitions. [2020-09-25 06:48:57,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3579 transitions. [2020-09-25 06:48:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 06:48:57,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:57,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:57,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:57,720 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:57,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2070552790, now seen corresponding path program 1 times [2020-09-25 06:48:57,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:57,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950330392] [2020-09-25 06:48:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:02,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-09-25 06:49:02,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:49:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:49:02,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:02,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:49:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:49:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:02,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:02,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:02,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:03,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:49:03,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 06:49:03,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:03,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:49:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:03,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:49:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:49:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:03,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950330392] [2020-09-25 06:49:03,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:03,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:03,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088085708] [2020-09-25 06:49:03,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:03,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:03,493 INFO L87 Difference]: Start difference. First operand 2781 states and 3579 transitions. Second operand 8 states. [2020-09-25 06:49:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:05,677 INFO L93 Difference]: Finished difference Result 6645 states and 8749 transitions. [2020-09-25 06:49:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:05,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-09-25 06:49:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:05,698 INFO L225 Difference]: With dead ends: 6645 [2020-09-25 06:49:05,698 INFO L226 Difference]: Without dead ends: 3855 [2020-09-25 06:49:05,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:49:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-09-25 06:49:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3831. [2020-09-25 06:49:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3831 states. [2020-09-25 06:49:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4824 transitions. [2020-09-25 06:49:05,805 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4824 transitions. Word has length 277 [2020-09-25 06:49:05,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:05,806 INFO L479 AbstractCegarLoop]: Abstraction has 3831 states and 4824 transitions. [2020-09-25 06:49:05,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4824 transitions. [2020-09-25 06:49:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-25 06:49:05,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:05,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:05,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:49:05,820 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash -381976138, now seen corresponding path program 1 times [2020-09-25 06:49:05,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:05,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997028846] [2020-09-25 06:49:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking...