/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:13,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:13,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:13,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:13,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:13,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:13,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:13,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:13,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:13,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:13,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:13,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:13,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:13,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:13,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:13,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:13,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:13,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:13,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:13,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:13,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:13,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:13,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:13,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:13,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:13,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:13,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:13,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:13,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:13,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:32:13,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:32:13,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:32:13,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:32:13,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:32:13,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:32:13,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:32:13,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:32:13,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:32:13,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:13,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:13,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:13,875 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 [2020-09-21 12:32:13,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:13,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:13,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:13,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:13,909 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:13,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:13,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:13,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:13,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:13,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:13,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:13,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:13,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:13,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:13,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:13,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:13,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:13,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:13,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:13,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:13,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:13,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:13,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:13,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:13,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:13,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:13,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:13,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:13,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:13,918 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:14,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:14,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:14,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:14,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:14,441 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:14,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-21 12:32:14,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4207a9f35/eb9dd0b0f2ce4d69ad29e9914bee5938/FLAG70ad1aa1e [2020-09-21 12:32:15,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:15,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-21 12:32:15,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4207a9f35/eb9dd0b0f2ce4d69ad29e9914bee5938/FLAG70ad1aa1e [2020-09-21 12:32:15,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4207a9f35/eb9dd0b0f2ce4d69ad29e9914bee5938 [2020-09-21 12:32:15,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:15,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:15,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:15,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:15,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:15,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:15" (1/1) ... [2020-09-21 12:32:15,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4931e9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:15, skipping insertion in model container [2020-09-21 12:32:15,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:15" (1/1) ... [2020-09-21 12:32:15,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:15,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:16,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:16,395 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:16,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:16,666 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:16,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16 WrapperNode [2020-09-21 12:32:16,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:16,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:16,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:16,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:16,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (1/1) ... [2020-09-21 12:32:16,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:16,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:16,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:16,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:16,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (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 [2020-09-21 12:32:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:18,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:18,911 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:18,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:18 BoogieIcfgContainer [2020-09-21 12:32:18,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:18,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:18,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:18,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:18,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:15" (1/3) ... [2020-09-21 12:32:18,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dd6709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:18, skipping insertion in model container [2020-09-21 12:32:18,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:16" (2/3) ... [2020-09-21 12:32:18,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dd6709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:18, skipping insertion in model container [2020-09-21 12:32:18,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:18" (3/3) ... [2020-09-21 12:32:18,929 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-21 12:32:18,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:18,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:18,981 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:19,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:19,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:19,022 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:19,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:19,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:19,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:19,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:19,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-09-21 12:32:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:32:19,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:19,074 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] [2020-09-21 12:32:19,075 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:19,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:19,083 INFO L82 PathProgramCache]: Analyzing trace with hash -806848853, now seen corresponding path program 1 times [2020-09-21 12:32:19,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:19,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814327381] [2020-09-21 12:32:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:19,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:32:19,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-21 12:32:19,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:19,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:19,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:32:19,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:32:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:19,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:19,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:32:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:19,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814327381] [2020-09-21 12:32:19,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:19,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:19,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531849806] [2020-09-21 12:32:19,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:19,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:20,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:20,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:20,013 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-09-21 12:32:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:22,669 INFO L93 Difference]: Finished difference Result 799 states and 1401 transitions. [2020-09-21 12:32:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:22,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-21 12:32:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:22,695 INFO L225 Difference]: With dead ends: 799 [2020-09-21 12:32:22,696 INFO L226 Difference]: Without dead ends: 443 [2020-09-21 12:32:22,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:22,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-09-21 12:32:22,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 429. [2020-09-21 12:32:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-21 12:32:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 645 transitions. [2020-09-21 12:32:22,807 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 645 transitions. Word has length 24 [2020-09-21 12:32:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:22,808 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 645 transitions. [2020-09-21 12:32:22,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 645 transitions. [2020-09-21 12:32:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:32:22,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:22,814 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:32:22,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:22,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1993121934, now seen corresponding path program 1 times [2020-09-21 12:32:22,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:22,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362340262] [2020-09-21 12:32:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-21 12:32:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:32:23,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:32:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:32:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:23,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:23,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:23,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:23,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:23,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:32:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-21 12:32:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:32:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:24,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362340262] [2020-09-21 12:32:24,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:24,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:24,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728593241] [2020-09-21 12:32:24,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:24,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:24,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:24,238 INFO L87 Difference]: Start difference. First operand 429 states and 645 transitions. Second operand 5 states. [2020-09-21 12:32:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:26,548 INFO L93 Difference]: Finished difference Result 1251 states and 1911 transitions. [2020-09-21 12:32:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:26,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-09-21 12:32:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:26,556 INFO L225 Difference]: With dead ends: 1251 [2020-09-21 12:32:26,556 INFO L226 Difference]: Without dead ends: 828 [2020-09-21 12:32:26,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-21 12:32:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 822. [2020-09-21 12:32:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-09-21 12:32:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1197 transitions. [2020-09-21 12:32:26,652 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1197 transitions. Word has length 94 [2020-09-21 12:32:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:26,653 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1197 transitions. [2020-09-21 12:32:26,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1197 transitions. [2020-09-21 12:32:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 12:32:26,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:26,657 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:32:26,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:26,657 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1886649786, now seen corresponding path program 1 times [2020-09-21 12:32:26,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:26,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950845937] [2020-09-21 12:32:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:32:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:32:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 12:32:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:32:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:27,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:27,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:27,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:32:27,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:32:27,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:32:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:28,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950845937] [2020-09-21 12:32:28,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:28,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:28,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605192049] [2020-09-21 12:32:28,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:28,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:28,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:28,043 INFO L87 Difference]: Start difference. First operand 822 states and 1197 transitions. Second operand 5 states. [2020-09-21 12:32:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:30,435 INFO L93 Difference]: Finished difference Result 2033 states and 3031 transitions. [2020-09-21 12:32:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:30,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-09-21 12:32:30,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:30,444 INFO L225 Difference]: With dead ends: 2033 [2020-09-21 12:32:30,444 INFO L226 Difference]: Without dead ends: 1217 [2020-09-21 12:32:30,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-09-21 12:32:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1205. [2020-09-21 12:32:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2020-09-21 12:32:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1683 transitions. [2020-09-21 12:32:30,490 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1683 transitions. Word has length 98 [2020-09-21 12:32:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:30,491 INFO L479 AbstractCegarLoop]: Abstraction has 1205 states and 1683 transitions. [2020-09-21 12:32:30,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1683 transitions. [2020-09-21 12:32:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-21 12:32:30,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:30,496 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:32:30,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:30,497 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:30,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2001628234, now seen corresponding path program 1 times [2020-09-21 12:32:30,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:30,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047502773] [2020-09-21 12:32:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-21 12:32:31,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:32:31,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:32:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:31,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-21 12:32:31,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:31,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047502773] [2020-09-21 12:32:31,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:31,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:31,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728107455] [2020-09-21 12:32:31,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:31,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:31,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:31,819 INFO L87 Difference]: Start difference. First operand 1205 states and 1683 transitions. Second operand 5 states. [2020-09-21 12:32:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:34,203 INFO L93 Difference]: Finished difference Result 2797 states and 4006 transitions. [2020-09-21 12:32:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:34,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-21 12:32:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:34,218 INFO L225 Difference]: With dead ends: 2797 [2020-09-21 12:32:34,219 INFO L226 Difference]: Without dead ends: 1598 [2020-09-21 12:32:34,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-09-21 12:32:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1587. [2020-09-21 12:32:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-09-21 12:32:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2279 transitions. [2020-09-21 12:32:34,286 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2279 transitions. Word has length 112 [2020-09-21 12:32:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:34,287 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 2279 transitions. [2020-09-21 12:32:34,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2279 transitions. [2020-09-21 12:32:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-21 12:32:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:34,301 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-21 12:32:34,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:34,302 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1923684750, now seen corresponding path program 1 times [2020-09-21 12:32:34,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:34,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061045131] [2020-09-21 12:32:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:34,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:35,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:32:35,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-21 12:32:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-21 12:32:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:35,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:35,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:35,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:35,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 12:32:35,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-21 12:32:35,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-21 12:32:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:35,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061045131] [2020-09-21 12:32:35,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:35,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:32:35,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242520579] [2020-09-21 12:32:35,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:35,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:35,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:35,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:35,850 INFO L87 Difference]: Start difference. First operand 1587 states and 2279 transitions. Second operand 5 states. [2020-09-21 12:32:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:38,660 INFO L93 Difference]: Finished difference Result 4694 states and 6912 transitions. [2020-09-21 12:32:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:38,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-21 12:32:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:38,680 INFO L225 Difference]: With dead ends: 4694 [2020-09-21 12:32:38,680 INFO L226 Difference]: Without dead ends: 3113 [2020-09-21 12:32:38,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-09-21 12:32:38,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 3107. [2020-09-21 12:32:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-09-21 12:32:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4209 transitions. [2020-09-21 12:32:38,791 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4209 transitions. Word has length 168 [2020-09-21 12:32:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:38,792 INFO L479 AbstractCegarLoop]: Abstraction has 3107 states and 4209 transitions. [2020-09-21 12:32:38,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4209 transitions. [2020-09-21 12:32:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-21 12:32:38,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:38,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:38,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:38,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:38,800 INFO L82 PathProgramCache]: Analyzing trace with hash -645024278, now seen corresponding path program 1 times [2020-09-21 12:32:38,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:38,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125899943] [2020-09-21 12:32:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-21 12:32:39,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-21 12:32:39,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 12:32:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:39,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:32:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-21 12:32:40,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:32:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:32:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:32:40,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-21 12:32:40,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:32:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:40,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125899943] [2020-09-21 12:32:40,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:40,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:40,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441016847] [2020-09-21 12:32:40,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:40,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:40,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:40,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:40,549 INFO L87 Difference]: Start difference. First operand 3107 states and 4209 transitions. Second operand 7 states. [2020-09-21 12:32:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:43,889 INFO L93 Difference]: Finished difference Result 7759 states and 12107 transitions. [2020-09-21 12:32:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:43,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-09-21 12:32:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:43,942 INFO L225 Difference]: With dead ends: 7759 [2020-09-21 12:32:43,943 INFO L226 Difference]: Without dead ends: 4658 [2020-09-21 12:32:43,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2020-09-21 12:32:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4476. [2020-09-21 12:32:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4476 states. [2020-09-21 12:32:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6232 transitions. [2020-09-21 12:32:44,221 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6232 transitions. Word has length 199 [2020-09-21 12:32:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:44,222 INFO L479 AbstractCegarLoop]: Abstraction has 4476 states and 6232 transitions. [2020-09-21 12:32:44,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6232 transitions. [2020-09-21 12:32:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-21 12:32:44,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:44,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:44,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:44,233 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:44,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:44,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1042184418, now seen corresponding path program 1 times [2020-09-21 12:32:44,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:44,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941032993] [2020-09-21 12:32:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-21 12:32:45,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:45,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:32:45,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 12:32:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-21 12:32:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:45,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:45,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:45,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:32:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-21 12:32:45,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:32:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:32:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 12:32:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-21 12:32:45,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:32:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:45,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941032993] [2020-09-21 12:32:45,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:45,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:45,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820028964] [2020-09-21 12:32:45,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:45,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:45,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:45,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:45,992 INFO L87 Difference]: Start difference. First operand 4476 states and 6232 transitions. Second operand 7 states. [2020-09-21 12:32:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,264 INFO L93 Difference]: Finished difference Result 11528 states and 17192 transitions. [2020-09-21 12:32:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:49,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-21 12:32:49,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,319 INFO L225 Difference]: With dead ends: 11528 [2020-09-21 12:32:49,319 INFO L226 Difference]: Without dead ends: 7058 [2020-09-21 12:32:49,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2020-09-21 12:32:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 6817. [2020-09-21 12:32:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6817 states. [2020-09-21 12:32:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 9536 transitions. [2020-09-21 12:32:49,621 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 9536 transitions. Word has length 203 [2020-09-21 12:32:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:49,621 INFO L479 AbstractCegarLoop]: Abstraction has 6817 states and 9536 transitions. [2020-09-21 12:32:49,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 9536 transitions. [2020-09-21 12:32:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-21 12:32:49,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:49,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 12:32:49,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:49,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 799940198, now seen corresponding path program 1 times [2020-09-21 12:32:49,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:49,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26758893] [2020-09-21 12:32:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-21 12:32:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-21 12:32:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:51,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-21 12:32:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 12:32:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:32:51,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-21 12:32:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:32:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:51,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26758893] [2020-09-21 12:32:51,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:51,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:51,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208073662] [2020-09-21 12:32:51,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:51,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:51,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:51,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:51,688 INFO L87 Difference]: Start difference. First operand 6817 states and 9536 transitions. Second operand 7 states. [2020-09-21 12:32:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:56,521 INFO L93 Difference]: Finished difference Result 20768 states and 31094 transitions. [2020-09-21 12:32:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:56,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-09-21 12:32:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:56,623 INFO L225 Difference]: With dead ends: 20768 [2020-09-21 12:32:56,623 INFO L226 Difference]: Without dead ends: 13767 [2020-09-21 12:32:56,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13767 states. [2020-09-21 12:32:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13767 to 13005. [2020-09-21 12:32:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13005 states. [2020-09-21 12:32:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13005 states to 13005 states and 19402 transitions. [2020-09-21 12:32:57,187 INFO L78 Accepts]: Start accepts. Automaton has 13005 states and 19402 transitions. Word has length 213 [2020-09-21 12:32:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:57,188 INFO L479 AbstractCegarLoop]: Abstraction has 13005 states and 19402 transitions. [2020-09-21 12:32:57,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 13005 states and 19402 transitions. [2020-09-21 12:32:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-21 12:32:57,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:57,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 12:32:57,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:57,212 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1151222622, now seen corresponding path program 1 times [2020-09-21 12:32:57,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:57,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497549395] [2020-09-21 12:32:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-21 12:32:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:32:58,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-21 12:32:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:58,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:32:58,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 12:32:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 12:32:58,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-21 12:32:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:32:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:59,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497549395] [2020-09-21 12:32:59,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:59,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:59,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739503445] [2020-09-21 12:32:59,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:59,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:59,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:59,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:59,070 INFO L87 Difference]: Start difference. First operand 13005 states and 19402 transitions. Second operand 7 states. [2020-09-21 12:33:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:02,501 INFO L93 Difference]: Finished difference Result 26249 states and 39346 transitions. [2020-09-21 12:33:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:33:02,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-21 12:33:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:02,561 INFO L225 Difference]: With dead ends: 26249 [2020-09-21 12:33:02,561 INFO L226 Difference]: Without dead ends: 13254 [2020-09-21 12:33:02,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:33:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2020-09-21 12:33:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 12846. [2020-09-21 12:33:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12846 states. [2020-09-21 12:33:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12846 states to 12846 states and 18367 transitions. [2020-09-21 12:33:02,979 INFO L78 Accepts]: Start accepts. Automaton has 12846 states and 18367 transitions. Word has length 217 [2020-09-21 12:33:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:02,980 INFO L479 AbstractCegarLoop]: Abstraction has 12846 states and 18367 transitions. [2020-09-21 12:33:02,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 12846 states and 18367 transitions. [2020-09-21 12:33:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-21 12:33:02,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:02,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:02,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:33:02,994 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:02,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1062304816, now seen corresponding path program 1 times [2020-09-21 12:33:02,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:02,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310733232] [2020-09-21 12:33:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-21 12:33:04,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:33:04,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:33:04,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:33:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:33:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:33:04,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:33:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:04,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:33:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:33:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:33:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 12:33:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 12:33:04,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-21 12:33:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:33:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:33:04,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310733232] [2020-09-21 12:33:04,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:04,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:04,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447086727] [2020-09-21 12:33:04,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:04,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:04,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:04,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:04,877 INFO L87 Difference]: Start difference. First operand 12846 states and 18367 transitions. Second operand 7 states.