/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:23:24,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:23:24,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:23:24,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:23:24,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:23:24,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:23:24,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:23:24,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:23:24,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:23:24,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:23:24,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:23:24,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:23:24,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:23:24,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:23:24,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:23:24,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:23:24,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:23:24,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:23:24,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:23:24,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:23:24,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:23:24,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:23:24,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:23:24,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:23:24,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:23:24,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:23:24,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:23:24,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:23:24,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:23:24,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:23:24,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:23:24,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:23:24,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:23:24,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:23:24,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:23:24,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:23:24,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:23:24,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:23:24,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:23:24,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:23:24,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:23:24,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:23:24,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:23:24,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:23:24,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:23:24,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:23:24,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:23:24,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:23:24,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:23:24,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:23:24,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:23:24,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:23:24,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:23:24,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:23:24,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:23:24,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:23:24,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:23:24,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:23:24,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:23:24,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:23:24,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:23:24,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:23:24,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:23:24,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:24,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:23:24,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:23:24,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:23:24,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:23:24,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:23:24,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:23:24,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:23:24,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:23:24,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:23:24,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:23:25,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:23:25,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:23:25,009 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:23:25,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 12:23:25,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42500c9db/cb3e47b07fd54068bf54368855231d82/FLAG311ce9601 [2020-09-25 12:23:25,719 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:23:25,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 12:23:25,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42500c9db/cb3e47b07fd54068bf54368855231d82/FLAG311ce9601 [2020-09-25 12:23:25,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42500c9db/cb3e47b07fd54068bf54368855231d82 [2020-09-25 12:23:25,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:23:25,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:23:25,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:25,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:23:25,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:23:25,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:25" (1/1) ... [2020-09-25 12:23:25,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518dc62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:25, skipping insertion in model container [2020-09-25 12:23:25,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:25" (1/1) ... [2020-09-25 12:23:25,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:23:26,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:23:26,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:26,520 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:23:26,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:26,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:23:26,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26 WrapperNode [2020-09-25 12:23:26,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:26,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:23:26,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:23:26,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:23:26,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... [2020-09-25 12:23:26,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:23:26,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:23:26,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:23:26,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:23:26,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:23:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:23:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:23:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:23:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:23:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:23:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:23:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:23:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:23:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:23:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:23:28,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:23:28,382 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:23:28,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:28 BoogieIcfgContainer [2020-09-25 12:23:28,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:23:28,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:23:28,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:23:28,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:23:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:23:25" (1/3) ... [2020-09-25 12:23:28,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f57b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:28, skipping insertion in model container [2020-09-25 12:23:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:26" (2/3) ... [2020-09-25 12:23:28,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f57b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:28, skipping insertion in model container [2020-09-25 12:23:28,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:28" (3/3) ... [2020-09-25 12:23:28,401 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label12.c [2020-09-25 12:23:28,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:23:28,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:23:28,448 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:23:28,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:23:28,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:23:28,483 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:23:28,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:23:28,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:23:28,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:23:28,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:23:28,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:23:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:23:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 12:23:28,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:28,544 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] [2020-09-25 12:23:28,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:28,554 INFO L82 PathProgramCache]: Analyzing trace with hash 463353353, now seen corresponding path program 1 times [2020-09-25 12:23:28,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:28,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745645541] [2020-09-25 12:23:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:33,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:23:33,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:23:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:23:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:33,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:23:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:23:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:23:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:34,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:34,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:23:34,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:34,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:34,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745645541] [2020-09-25 12:23:34,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:34,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:23:34,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189951808] [2020-09-25 12:23:34,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:23:34,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:34,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:23:34,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:23:34,225 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:36,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:36,316 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 12:23:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:36,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 12:23:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:36,360 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 12:23:36,361 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 12:23:36,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 12:23:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 12:23:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 12:23:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 12:23:36,479 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 144 [2020-09-25 12:23:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:36,480 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 12:23:36,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 12:23:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 12:23:36,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:36,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:36,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:36,490 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash -278646622, now seen corresponding path program 1 times [2020-09-25 12:23:36,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:36,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051524287] [2020-09-25 12:23:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:41,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 12:23:41,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:23:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:23:41,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:41,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:23:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 12:23:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:23:41,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:41,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:41,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:41,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:41,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:41,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:23:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:41,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:23:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:41,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051524287] [2020-09-25 12:23:41,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:41,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:41,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396356337] [2020-09-25 12:23:41,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:41,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:41,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:41,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:41,881 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 12:23:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:44,003 INFO L93 Difference]: Finished difference Result 1521 states and 2021 transitions. [2020-09-25 12:23:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:44,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 12:23:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:44,014 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 12:23:44,014 INFO L226 Difference]: Without dead ends: 930 [2020-09-25 12:23:44,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-09-25 12:23:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 917. [2020-09-25 12:23:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-09-25 12:23:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1188 transitions. [2020-09-25 12:23:44,061 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1188 transitions. Word has length 170 [2020-09-25 12:23:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:44,062 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1188 transitions. [2020-09-25 12:23:44,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1188 transitions. [2020-09-25 12:23:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 12:23:44,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:44,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:44,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:44,069 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1919685948, now seen corresponding path program 1 times [2020-09-25 12:23:44,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:44,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703899594] [2020-09-25 12:23:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:23:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:23:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 12:23:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:49,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:23:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 12:23:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:49,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:23:49,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:49,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:49,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:23:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:23:49,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:49,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:23:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:49,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703899594] [2020-09-25 12:23:49,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:49,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:49,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566827891] [2020-09-25 12:23:49,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:49,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:49,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:49,488 INFO L87 Difference]: Start difference. First operand 917 states and 1188 transitions. Second operand 5 states. [2020-09-25 12:23:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:51,613 INFO L93 Difference]: Finished difference Result 2443 states and 3321 transitions. [2020-09-25 12:23:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:51,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 12:23:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:51,633 INFO L225 Difference]: With dead ends: 2443 [2020-09-25 12:23:51,634 INFO L226 Difference]: Without dead ends: 1548 [2020-09-25 12:23:51,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-25 12:23:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1526. [2020-09-25 12:23:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2020-09-25 12:23:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1917 transitions. [2020-09-25 12:23:51,728 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1917 transitions. Word has length 178 [2020-09-25 12:23:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:51,729 INFO L479 AbstractCegarLoop]: Abstraction has 1526 states and 1917 transitions. [2020-09-25 12:23:51,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1917 transitions. [2020-09-25 12:23:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 12:23:51,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:51,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:51,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:51,747 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash -15613156, now seen corresponding path program 1 times [2020-09-25 12:23:51,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:51,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329081451] [2020-09-25 12:23:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:56,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 12:23:56,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:23:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:23:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:56,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:23:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:23:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-25 12:23:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:57,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:57,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:57,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:57,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:23:57,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:57,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:23:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:57,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:57,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:23:57,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:57,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 12:23:57,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:57,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:23:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 12:23:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:57,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329081451] [2020-09-25 12:23:57,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:57,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:23:57,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902704917] [2020-09-25 12:23:57,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:23:57,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:57,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:23:57,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:23:57,739 INFO L87 Difference]: Start difference. First operand 1526 states and 1917 transitions. Second operand 11 states. [2020-09-25 12:24:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:01,843 INFO L93 Difference]: Finished difference Result 4426 states and 5777 transitions. [2020-09-25 12:24:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:24:01,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 213 [2020-09-25 12:24:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:01,865 INFO L225 Difference]: With dead ends: 4426 [2020-09-25 12:24:01,865 INFO L226 Difference]: Without dead ends: 2806 [2020-09-25 12:24:01,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:24:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-09-25 12:24:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2501. [2020-09-25 12:24:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2020-09-25 12:24:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3133 transitions. [2020-09-25 12:24:01,981 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3133 transitions. Word has length 213 [2020-09-25 12:24:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:01,981 INFO L479 AbstractCegarLoop]: Abstraction has 2501 states and 3133 transitions. [2020-09-25 12:24:01,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:24:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3133 transitions. [2020-09-25 12:24:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 12:24:01,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:01,994 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:01,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:24:01,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:01,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1374839553, now seen corresponding path program 1 times [2020-09-25 12:24:01,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:01,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662416127] [2020-09-25 12:24:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:07,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 12:24:07,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:24:07,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:24:07,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:07,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:24:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 12:24:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 12:24:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:24:07,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:07,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:07,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:24:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:24:07,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:07,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:24:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:07,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:24:07,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 12:24:07,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:07,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:24:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:24:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 12:24:07,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662416127] [2020-09-25 12:24:07,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:07,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:24:07,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311938274] [2020-09-25 12:24:07,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:24:07,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:24:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:24:07,595 INFO L87 Difference]: Start difference. First operand 2501 states and 3133 transitions. Second operand 8 states. [2020-09-25 12:24:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:10,491 INFO L93 Difference]: Finished difference Result 5554 states and 7150 transitions. [2020-09-25 12:24:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:24:10,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-25 12:24:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:10,510 INFO L225 Difference]: With dead ends: 5554 [2020-09-25 12:24:10,510 INFO L226 Difference]: Without dead ends: 2977 [2020-09-25 12:24:10,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:24:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-09-25 12:24:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2947. [2020-09-25 12:24:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2947 states. [2020-09-25 12:24:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 3618 transitions. [2020-09-25 12:24:10,613 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 3618 transitions. Word has length 222 [2020-09-25 12:24:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:10,614 INFO L479 AbstractCegarLoop]: Abstraction has 2947 states and 3618 transitions. [2020-09-25 12:24:10,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:24:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 3618 transitions. [2020-09-25 12:24:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 12:24:10,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:10,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:24:10,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:24:10,628 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash -979872990, now seen corresponding path program 1 times [2020-09-25 12:24:10,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:10,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662927140] [2020-09-25 12:24:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:15,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:24:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:24:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-09-25 12:24:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 12:24:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:15,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:24:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0