/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=LOWLEXORDER --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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:03,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:03,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:03,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:03,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:03,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:03,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:03,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:03,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:03,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:03,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:03,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:03,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:03,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:03,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:03,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:03,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:03,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:03,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:03,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:03,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:03,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:03,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:03,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:03,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:03,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:03,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:03,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:03,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:03,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:42:03,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:42:03,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:42:03,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:42:03,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:42:03,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:42:03,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:42:03,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:42:03,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:42:03,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:03,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:03,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:03,476 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 [2020-09-24 21:42:03,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:03,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:03,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:03,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:03,507 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:03,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:03,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:03,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:03,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:03,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:03,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:03,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:03,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:03,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:03,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:03,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:03,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:03,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:03,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:03,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:03,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:03,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:03,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:03,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:03,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:03,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:03,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:03,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:03,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:03,512 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:42:04,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:04,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:04,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:04,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:04,074 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:04,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-24 21:42:04,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae2a11c9f/097272f65dbf44c7af2e11887fc12764/FLAGf9514e9a1 [2020-09-24 21:42:04,827 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:04,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-24 21:42:04,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae2a11c9f/097272f65dbf44c7af2e11887fc12764/FLAGf9514e9a1 [2020-09-24 21:42:05,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae2a11c9f/097272f65dbf44c7af2e11887fc12764 [2020-09-24 21:42:05,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:05,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:05,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:05,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:05,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:05,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:05,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c30f9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05, skipping insertion in model container [2020-09-24 21:42:05,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:05,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:05,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:05,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:05,767 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:05,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:05,926 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:05,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05 WrapperNode [2020-09-24 21:42:05,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:05,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:05,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:05,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:05,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:05,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:05,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:05,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:06,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:06,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:06,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... [2020-09-24 21:42:06,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:06,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:06,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:06,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:06,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:07,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:07,509 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:07,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:07 BoogieIcfgContainer [2020-09-24 21:42:07,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:07,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:07,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:07,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:07,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:05" (1/3) ... [2020-09-24 21:42:07,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477993fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:07, skipping insertion in model container [2020-09-24 21:42:07,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:05" (2/3) ... [2020-09-24 21:42:07,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477993fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:07, skipping insertion in model container [2020-09-24 21:42:07,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:07" (3/3) ... [2020-09-24 21:42:07,531 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-24 21:42:07,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:07,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:07,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:07,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:07,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:07,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:07,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:07,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:07,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:07,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:07,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 21:42:07,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:07,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:07,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:07,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-24 21:42:07,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:07,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587320376] [2020-09-24 21:42:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 21:42:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 21:42:13,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 21:42:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:42:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:13,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:13,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 21:42:13,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:14,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587320376] [2020-09-24 21:42:14,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:14,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:14,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194519312] [2020-09-24 21:42:14,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:14,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:14,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:14,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:14,164 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:14,740 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-09-24 21:42:14,981 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:42:15,308 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:42:15,918 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 21:42:16,388 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:42:17,345 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:42:17,543 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 21:42:17,979 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 21:42:18,609 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 21:42:19,148 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 21:42:20,616 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 21:42:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:21,946 INFO L93 Difference]: Finished difference Result 1650 states and 2328 transitions. [2020-09-24 21:42:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 21:42:21,948 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-09-24 21:42:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:21,979 INFO L225 Difference]: With dead ends: 1650 [2020-09-24 21:42:21,979 INFO L226 Difference]: Without dead ends: 1000 [2020-09-24 21:42:21,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=433, Invalid=1049, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 21:42:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-09-24 21:42:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 897. [2020-09-24 21:42:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-09-24 21:42:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1070 transitions. [2020-09-24 21:42:22,119 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1070 transitions. Word has length 160 [2020-09-24 21:42:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:22,120 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1070 transitions. [2020-09-24 21:42:22,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1070 transitions. [2020-09-24 21:42:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 21:42:22,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:22,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:22,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:22,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:22,131 INFO L82 PathProgramCache]: Analyzing trace with hash 492784939, now seen corresponding path program 1 times [2020-09-24 21:42:22,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:22,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626076260] [2020-09-24 21:42:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:27,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:27,807 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-24 21:42:27,925 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 21:42:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:28,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:28,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:42:28,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:28,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:28,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:28,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:28,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 21:42:28,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:28,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:28,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:29,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626076260] [2020-09-24 21:42:29,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:29,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:42:29,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017028794] [2020-09-24 21:42:29,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:42:29,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:29,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:42:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:42:29,328 INFO L87 Difference]: Start difference. First operand 897 states and 1070 transitions. Second operand 19 states. [2020-09-24 21:42:30,224 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:42:30,697 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-09-24 21:42:31,024 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-09-24 21:42:31,222 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-09-24 21:42:31,730 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-09-24 21:42:32,065 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-09-24 21:42:32,586 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-09-24 21:42:32,870 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 21:42:33,185 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-09-24 21:42:34,040 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-09-24 21:42:34,751 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-09-24 21:42:35,218 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-09-24 21:42:36,202 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-09-24 21:42:36,936 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-09-24 21:42:37,390 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-09-24 21:42:37,804 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-09-24 21:42:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:39,716 INFO L93 Difference]: Finished difference Result 3410 states and 4508 transitions. [2020-09-24 21:42:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 21:42:39,717 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-09-24 21:42:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:39,737 INFO L225 Difference]: With dead ends: 3410 [2020-09-24 21:42:39,737 INFO L226 Difference]: Without dead ends: 2593 [2020-09-24 21:42:39,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=687, Invalid=1569, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 21:42:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2020-09-24 21:42:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2516. [2020-09-24 21:42:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-09-24 21:42:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3033 transitions. [2020-09-24 21:42:39,838 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3033 transitions. Word has length 182 [2020-09-24 21:42:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:39,839 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 3033 transitions. [2020-09-24 21:42:39,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:42:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3033 transitions. [2020-09-24 21:42:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 21:42:39,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:39,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:39,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:39,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1894807830, now seen corresponding path program 1 times [2020-09-24 21:42:39,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:39,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334358326] [2020-09-24 21:42:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 21:42:44,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:42:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:42:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:42:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:42:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:42:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:42:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:45,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:45,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:42:45,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:42:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:45,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:42:45,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 21:42:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:42:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 21:42:45,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334358326] [2020-09-24 21:42:45,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:45,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:42:45,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156981588] [2020-09-24 21:42:45,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:42:45,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:42:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:42:45,861 INFO L87 Difference]: Start difference. First operand 2516 states and 3033 transitions. Second operand 12 states. [2020-09-24 21:42:46,693 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-24 21:42:46,946 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 21:42:47,478 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 21:42:47,652 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-24 21:42:49,624 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-24 21:42:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:52,628 INFO L93 Difference]: Finished difference Result 7681 states and 10260 transitions. [2020-09-24 21:42:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:42:52,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-09-24 21:42:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:52,664 INFO L225 Difference]: With dead ends: 7681 [2020-09-24 21:42:52,664 INFO L226 Difference]: Without dead ends: 4895 [2020-09-24 21:42:52,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2020-09-24 21:42:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2020-09-24 21:42:52,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 4416. [2020-09-24 21:42:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4416 states. [2020-09-24 21:42:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 5485 transitions. [2020-09-24 21:42:52,856 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 5485 transitions. Word has length 195 [2020-09-24 21:42:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:52,857 INFO L479 AbstractCegarLoop]: Abstraction has 4416 states and 5485 transitions. [2020-09-24 21:42:52,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:42:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 5485 transitions. [2020-09-24 21:42:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 21:42:52,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:52,876 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:52,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:42:52,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:52,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1625676196, now seen corresponding path program 1 times [2020-09-24 21:42:52,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:52,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505206255] [2020-09-24 21:42:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking...