/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:20,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:20,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:20,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:20,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:20,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:20,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:20,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:20,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:20,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:20,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:20,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:20,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:20,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:20,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:20,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:20,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:20,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:20,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:20,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:20,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:20,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:20,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:20,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:20,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:20,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:20,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:20,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:20,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:20,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:20,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:20,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:20,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:20,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:20,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:20,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:20,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:20,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:20,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:20,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:20,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:20,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:27:20,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:20,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:20,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:20,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:20,408 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:20,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:20,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:20,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:20,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:20,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:20,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:20,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:20,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:20,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:20,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:20,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:20,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:20,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:20,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:20,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:20,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:20,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:20,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:20,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:20,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:20,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:20,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:20,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:20,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:20,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:27:20,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:20,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:20,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:20,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:20,909 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:20,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 04:27:20,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcf91be55/8fcb27f6b7354a24a2b1685226a9d2a3/FLAGfa6091364 [2020-09-25 04:27:21,616 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:21,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 04:27:21,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcf91be55/8fcb27f6b7354a24a2b1685226a9d2a3/FLAGfa6091364 [2020-09-25 04:27:21,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcf91be55/8fcb27f6b7354a24a2b1685226a9d2a3 [2020-09-25 04:27:21,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:21,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:21,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:21,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:21,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:21,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21, skipping insertion in model container [2020-09-25 04:27:21,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:21,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:22,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:22,442 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:22,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:22,716 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:22,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22 WrapperNode [2020-09-25 04:27:22,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:22,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:22,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:22,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:22,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... [2020-09-25 04:27:22,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:22,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:22,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:22,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:22,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:22,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:24,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:24,349 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:24,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:24 BoogieIcfgContainer [2020-09-25 04:27:24,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:24,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:24,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:24,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:24,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:21" (1/3) ... [2020-09-25 04:27:24,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:24, skipping insertion in model container [2020-09-25 04:27:24,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:22" (2/3) ... [2020-09-25 04:27:24,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:24, skipping insertion in model container [2020-09-25 04:27:24,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:24" (3/3) ... [2020-09-25 04:27:24,368 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-09-25 04:27:24,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:24,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:24,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:24,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:24,453 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:24,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:24,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:24,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:24,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:24,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:24,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 04:27:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:24,511 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] [2020-09-25 04:27:24,511 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1196465745, now seen corresponding path program 1 times [2020-09-25 04:27:24,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:24,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 04:27:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:27:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:27:29,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:29,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 04:27:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:27:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:30,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:30,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:30,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:27:30,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:30,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:30,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 04:27:30,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:30,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:30,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506000345] [2020-09-25 04:27:30,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:30,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:30,188 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:32,628 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:27:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:32,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 04:27:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:32,690 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:27:32,690 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:27:32,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:27:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:27:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:27:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:27:32,820 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 122 [2020-09-25 04:27:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:32,822 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:27:32,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:27:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:27:32,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:32,830 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:27:32,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:32,831 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:32,831 INFO L82 PathProgramCache]: Analyzing trace with hash -54057051, now seen corresponding path program 1 times [2020-09-25 04:27:32,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:32,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580707439] [2020-09-25 04:27:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:27:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:27:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:27:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:37,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:27:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 04:27:37,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:38,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:38,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:38,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:27:38,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:38,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:27:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:38,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580707439] [2020-09-25 04:27:38,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:38,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:38,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415825997] [2020-09-25 04:27:38,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:38,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:38,180 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:27:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:39,670 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 04:27:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:39,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 04:27:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:39,684 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 04:27:39,684 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 04:27:39,687 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 04:27:39,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 04:27:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 04:27:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 04:27:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 04:27:39,730 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 140 [2020-09-25 04:27:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:39,730 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 04:27:39,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 04:27:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 04:27:39,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:39,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:39,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:39,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:39,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:39,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1331654230, now seen corresponding path program 1 times [2020-09-25 04:27:39,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:39,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910611035] [2020-09-25 04:27:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:42,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:42,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 04:27:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:27:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-09-25 04:27:42,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:42,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:27:42,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 04:27:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:43,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:27:43,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:43,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:27:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:27:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:27:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:43,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910611035] [2020-09-25 04:27:43,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:43,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:43,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974472381] [2020-09-25 04:27:43,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:43,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:43,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:43,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:43,142 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 04:27:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:45,356 INFO L93 Difference]: Finished difference Result 2102 states and 2820 transitions. [2020-09-25 04:27:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:45,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 04:27:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:45,366 INFO L225 Difference]: With dead ends: 2102 [2020-09-25 04:27:45,366 INFO L226 Difference]: Without dead ends: 1308 [2020-09-25 04:27:45,371 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 04:27:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-09-25 04:27:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1272. [2020-09-25 04:27:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-09-25 04:27:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2020-09-25 04:27:45,415 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 148 [2020-09-25 04:27:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:45,416 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2020-09-25 04:27:45,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:45,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2020-09-25 04:27:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:27:45,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:45,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:45,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:45,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:45,423 INFO L82 PathProgramCache]: Analyzing trace with hash 931685273, now seen corresponding path program 1 times [2020-09-25 04:27:45,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:45,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564484599] [2020-09-25 04:27:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:50,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 04:27:50,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:27:50,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:50,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 04:27:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 04:27:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:50,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:50,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:50,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:50,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:27:50,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:50,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:27:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:50,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564484599] [2020-09-25 04:27:50,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:50,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:50,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468974630] [2020-09-25 04:27:50,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:50,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:50,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:50,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:50,737 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand 5 states. [2020-09-25 04:27:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:52,844 INFO L93 Difference]: Finished difference Result 3300 states and 4205 transitions. [2020-09-25 04:27:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:52,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 04:27:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:52,860 INFO L225 Difference]: With dead ends: 3300 [2020-09-25 04:27:52,861 INFO L226 Difference]: Without dead ends: 1739 [2020-09-25 04:27:52,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-09-25 04:27:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1567. [2020-09-25 04:27:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-09-25 04:27:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1909 transitions. [2020-09-25 04:27:52,937 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1909 transitions. Word has length 160 [2020-09-25 04:27:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:52,938 INFO L479 AbstractCegarLoop]: Abstraction has 1567 states and 1909 transitions. [2020-09-25 04:27:52,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1909 transitions. [2020-09-25 04:27:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 04:27:52,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:52,949 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:52,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:52,949 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash -904785138, now seen corresponding path program 1 times [2020-09-25 04:27:52,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:52,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567641562] [2020-09-25 04:27:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 04:27:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:27:57,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-25 04:27:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 04:27:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:58,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:27:58,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:58,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:27:58,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:27:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:27:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:27:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:27:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 04:27:58,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567641562] [2020-09-25 04:27:58,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:58,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:58,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437539322] [2020-09-25 04:27:58,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:58,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:58,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:58,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:58,268 INFO L87 Difference]: Start difference. First operand 1567 states and 1909 transitions. Second operand 5 states. [2020-09-25 04:28:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:00,203 INFO L93 Difference]: Finished difference Result 3824 states and 4794 transitions. [2020-09-25 04:28:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:00,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 04:28:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:00,215 INFO L225 Difference]: With dead ends: 3824 [2020-09-25 04:28:00,216 INFO L226 Difference]: Without dead ends: 2278 [2020-09-25 04:28:00,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2020-09-25 04:28:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2169. [2020-09-25 04:28:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2020-09-25 04:28:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2705 transitions. [2020-09-25 04:28:00,292 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2705 transitions. Word has length 191 [2020-09-25 04:28:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:00,293 INFO L479 AbstractCegarLoop]: Abstraction has 2169 states and 2705 transitions. [2020-09-25 04:28:00,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2705 transitions. [2020-09-25 04:28:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 04:28:00,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:00,303 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:00,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:00,303 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:00,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1038430652, now seen corresponding path program 1 times [2020-09-25 04:28:00,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:00,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847574523] [2020-09-25 04:28:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 04:28:05,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:28:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 04:28:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 04:28:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:28:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:05,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:05,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:05,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:28:05,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:28:05,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:28:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:28:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:05,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847574523] [2020-09-25 04:28:05,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:28:05,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807286054] [2020-09-25 04:28:05,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:05,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:05,660 INFO L87 Difference]: Start difference. First operand 2169 states and 2705 transitions. Second operand 5 states. [2020-09-25 04:28:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:07,538 INFO L93 Difference]: Finished difference Result 5243 states and 6683 transitions. [2020-09-25 04:28:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:07,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 04:28:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:07,540 INFO L225 Difference]: With dead ends: 5243 [2020-09-25 04:28:07,540 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:28:07,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:28:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:28:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:28:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:28:07,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 191 [2020-09-25 04:28:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:07,566 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:28:07,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:28:07,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:28:07,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:28:07,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:28:08,614 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 20 [2020-09-25 04:28:08,785 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 20