/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/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:15,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:15,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:15,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:15,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:15,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:15,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:15,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:15,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:15,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:15,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:15,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:15,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:15,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:15,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:15,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:15,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:15,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:15,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:15,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:15,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:15,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:15,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:15,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:15,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:15,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:15,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:15,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:15,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:15,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:15,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:15,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:15,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:15,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:15,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:15,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:15,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:15,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:15,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:15,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:15,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:15,443 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 21:45:15,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:15,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:15,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:15,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:15,495 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:15,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:15,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:15,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:15,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:15,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:15,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:15,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:15,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:15,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:15,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:15,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:15,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:15,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:15,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:15,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:15,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:15,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:15,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:15,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:15,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:15,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:15,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:15,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:15,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:15,503 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 21:45:15,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:15,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:15,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:15,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:15,984 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:15,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-24 21:45:16,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/618240aff/34853bce8362477888b2db67289e0467/FLAGdea91ca2e [2020-09-24 21:45:16,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:16,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-24 21:45:16,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/618240aff/34853bce8362477888b2db67289e0467/FLAGdea91ca2e [2020-09-24 21:45:16,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/618240aff/34853bce8362477888b2db67289e0467 [2020-09-24 21:45:16,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:16,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:16,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:16,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:16,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:16,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:16" (1/1) ... [2020-09-24 21:45:16,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:16, skipping insertion in model container [2020-09-24 21:45:16,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:16" (1/1) ... [2020-09-24 21:45:16,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:17,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:17,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:17,512 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:17,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:17,797 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:17,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17 WrapperNode [2020-09-24 21:45:17,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:17,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:17,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:17,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:17,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (1/1) ... [2020-09-24 21:45:17,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:17,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:17,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:17,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:17,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (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 21:45:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:19,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:19,450 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:19,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:19 BoogieIcfgContainer [2020-09-24 21:45:19,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:19,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:19,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:19,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:19,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:16" (1/3) ... [2020-09-24 21:45:19,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:19, skipping insertion in model container [2020-09-24 21:45:19,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:17" (2/3) ... [2020-09-24 21:45:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:19, skipping insertion in model container [2020-09-24 21:45:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:19" (3/3) ... [2020-09-24 21:45:19,469 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-24 21:45:19,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:19,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:19,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:19,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:19,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:19,560 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:19,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:19,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:19,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:19,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:19,561 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 21:45:19,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:19,609 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] [2020-09-24 21:45:19,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:19,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-24 21:45:19,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:19,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-24 21:45:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:20,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:45:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-24 21:45:20,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 21:45:20,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:21,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:21,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:45:21,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:21,065 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 21:45:21,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-24 21:45:21,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:21,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:21,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078253064] [2020-09-24 21:45:21,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:21,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:21,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:21,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:21,101 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:22,968 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:45:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:22,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-24 21:45:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:23,020 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:45:23,021 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:45:23,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:45:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:45:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:45:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:45:23,181 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-24 21:45:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:23,182 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:45:23,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:45:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 21:45:23,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:23,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:23,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:23,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-24 21:45:23,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:23,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504696239] [2020-09-24 21:45:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:45:27,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3809 [2020-09-24 21:45:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-24 21:45:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:27,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:45:27,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:27,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:27,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-24 21:45:27,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:45:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:27,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504696239] [2020-09-24 21:45:27,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:27,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:27,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175079973] [2020-09-24 21:45:27,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:27,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:27,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:27,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:27,950 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:45:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:31,203 INFO L93 Difference]: Finished difference Result 1267 states and 1577 transitions. [2020-09-24 21:45:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:31,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-09-24 21:45:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:31,212 INFO L225 Difference]: With dead ends: 1267 [2020-09-24 21:45:31,212 INFO L226 Difference]: Without dead ends: 738 [2020-09-24 21:45:31,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-24 21:45:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 695. [2020-09-24 21:45:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:45:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 860 transitions. [2020-09-24 21:45:31,248 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 860 transitions. Word has length 141 [2020-09-24 21:45:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:31,249 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 860 transitions. [2020-09-24 21:45:31,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 860 transitions. [2020-09-24 21:45:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 21:45:31,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:31,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:31,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:31,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:31,261 INFO L82 PathProgramCache]: Analyzing trace with hash 15109103, now seen corresponding path program 1 times [2020-09-24 21:45:31,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:31,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32860692] [2020-09-24 21:45:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 21:45:36,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:45:36,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:36,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:36,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:36,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:45:36,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:36,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 21:45:36,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:36,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:36,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:36,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:36,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32860692] [2020-09-24 21:45:36,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:36,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:36,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873487763] [2020-09-24 21:45:36,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:36,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:36,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:36,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:36,863 INFO L87 Difference]: Start difference. First operand 695 states and 860 transitions. Second operand 7 states. [2020-09-24 21:45:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:39,158 INFO L93 Difference]: Finished difference Result 1401 states and 1820 transitions. [2020-09-24 21:45:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:45:39,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-09-24 21:45:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:39,165 INFO L225 Difference]: With dead ends: 1401 [2020-09-24 21:45:39,165 INFO L226 Difference]: Without dead ends: 871 [2020-09-24 21:45:39,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-09-24 21:45:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 855. [2020-09-24 21:45:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-09-24 21:45:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1075 transitions. [2020-09-24 21:45:39,215 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1075 transitions. Word has length 194 [2020-09-24 21:45:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:39,217 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1075 transitions. [2020-09-24 21:45:39,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1075 transitions. [2020-09-24 21:45:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-24 21:45:39,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:39,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:45:39,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:39,229 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1750064563, now seen corresponding path program 1 times [2020-09-24 21:45:39,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:39,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717222814] [2020-09-24 21:45:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 21:45:44,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:45:44,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-24 21:45:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:44,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:44,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 21:45:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:44,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:44,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:44,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 21:45:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:44,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717222814] [2020-09-24 21:45:44,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:44,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:44,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438716972] [2020-09-24 21:45:44,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:44,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:44,983 INFO L87 Difference]: Start difference. First operand 855 states and 1075 transitions. Second operand 10 states. [2020-09-24 21:45:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:48,811 INFO L93 Difference]: Finished difference Result 2491 states and 3385 transitions. [2020-09-24 21:45:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:45:48,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 233 [2020-09-24 21:45:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:48,825 INFO L225 Difference]: With dead ends: 2491 [2020-09-24 21:45:48,826 INFO L226 Difference]: Without dead ends: 1801 [2020-09-24 21:45:48,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:45:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2020-09-24 21:45:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1706. [2020-09-24 21:45:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-09-24 21:45:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2200 transitions. [2020-09-24 21:45:48,905 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2200 transitions. Word has length 233 [2020-09-24 21:45:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:48,906 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 2200 transitions. [2020-09-24 21:45:48,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2200 transitions. [2020-09-24 21:45:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 21:45:48,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:48,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:45:48,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:48,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:48,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1984953489, now seen corresponding path program 1 times [2020-09-24 21:45:48,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:48,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161765931] [2020-09-24 21:45:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 21:45:54,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:45:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 21:45:54,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:54,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:54,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:45:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 21:45:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:54,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-24 21:45:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 118 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:55,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161765931] [2020-09-24 21:45:55,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:55,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:55,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706953437] [2020-09-24 21:45:55,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:55,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:55,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:55,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:55,473 INFO L87 Difference]: Start difference. First operand 1706 states and 2200 transitions. Second operand 13 states. [2020-09-24 21:46:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:00,785 INFO L93 Difference]: Finished difference Result 4424 states and 6221 transitions. [2020-09-24 21:46:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:46:00,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 243 [2020-09-24 21:46:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:00,806 INFO L225 Difference]: With dead ends: 4424 [2020-09-24 21:46:00,806 INFO L226 Difference]: Without dead ends: 2840 [2020-09-24 21:46:00,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:46:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-09-24 21:46:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2112. [2020-09-24 21:46:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-09-24 21:46:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2802 transitions. [2020-09-24 21:46:00,896 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2802 transitions. Word has length 243 [2020-09-24 21:46:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:00,897 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 2802 transitions. [2020-09-24 21:46:00,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:46:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2802 transitions. [2020-09-24 21:46:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-09-24 21:46:00,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:00,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:46:00,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:00,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:00,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1668415744, now seen corresponding path program 1 times [2020-09-24 21:46:00,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:00,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274170745] [2020-09-24 21:46:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking...