/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:10:36,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:10:36,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:10:37,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:10:37,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:10:37,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:10:37,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:10:37,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:10:37,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:10:37,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:10:37,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:10:37,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:10:37,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:10:37,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:10:37,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:10:37,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:10:37,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:10:37,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:10:37,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:10:37,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:10:37,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:10:37,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:10:37,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:10:37,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:10:37,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:10:37,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:10:37,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:10:37,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:10:37,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:10:37,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:10:37,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:10:37,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:10:37,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:10:37,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:10:37,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:10:37,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:10:37,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:10:37,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:10:37,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:10:37,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:10:37,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:10:37,055 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 [2020-10-13 09:10:37,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:10:37,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:10:37,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:10:37,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:10:37,081 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:10:37,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:10:37,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:10:37,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:10:37,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:10:37,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:10:37,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:10:37,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:10:37,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:10:37,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:10:37,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:10:37,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:10:37,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:10:37,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:10:37,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:10:37,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:10:37,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:10:37,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:10:37,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:10:37,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:10:37,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:10:37,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:10:37,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:10:37,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:10:37,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:10:37,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:10:37,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:10:37,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:10:37,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:10:37,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:10:37,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:10:37,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-13 09:10:37,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b92eba2/af48cd5b3632472bb0a6cc60915031e6/FLAG60215d9cf [2020-10-13 09:10:38,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:10:38,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-13 09:10:38,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b92eba2/af48cd5b3632472bb0a6cc60915031e6/FLAG60215d9cf [2020-10-13 09:10:38,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b92eba2/af48cd5b3632472bb0a6cc60915031e6 [2020-10-13 09:10:38,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:10:38,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:10:38,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:10:38,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:10:38,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:10:38,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:38" (1/1) ... [2020-10-13 09:10:38,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf6174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:38, skipping insertion in model container [2020-10-13 09:10:38,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:38" (1/1) ... [2020-10-13 09:10:38,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:10:38,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:10:39,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:10:39,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:10:39,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:10:39,837 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:10:39,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39 WrapperNode [2020-10-13 09:10:39,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:10:39,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:10:39,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:10:39,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:10:39,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:39,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:39,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:39,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:39,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:39,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:40,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (1/1) ... [2020-10-13 09:10:40,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:10:40,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:10:40,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:10:40,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:10:40,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (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 [2020-10-13 09:10:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:10:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:10:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:10:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:10:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:10:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:10:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:10:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:10:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:10:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:10:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:10:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:10:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:10:45,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:10:45,928 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:10:45,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:45 BoogieIcfgContainer [2020-10-13 09:10:45,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:10:45,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:10:45,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:10:45,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:10:45,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:10:38" (1/3) ... [2020-10-13 09:10:45,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3076bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:45, skipping insertion in model container [2020-10-13 09:10:45,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:39" (2/3) ... [2020-10-13 09:10:45,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3076bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:45, skipping insertion in model container [2020-10-13 09:10:45,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:45" (3/3) ... [2020-10-13 09:10:45,945 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2020-10-13 09:10:45,955 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:10:45,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:10:45,975 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:10:46,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:10:46,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:10:46,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:10:46,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:10:46,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:10:46,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:10:46,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:10:46,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:10:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:10:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 09:10:46,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:46,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:46,047 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:46,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1056547171, now seen corresponding path program 1 times [2020-10-13 09:10:46,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:46,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668667042] [2020-10-13 09:10:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:46,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 09:10:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-13 09:10:46,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:10:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:10:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:10:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:10:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:46,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:10:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:47,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668667042] [2020-10-13 09:10:47,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:10:47,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:10:47,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841267657] [2020-10-13 09:10:47,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:10:47,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:47,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:10:47,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:10:47,066 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:10:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:52,957 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:10:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:52,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-13 09:10:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:52,985 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:10:52,985 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:10:53,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:10:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:10:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:10:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:10:53,116 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 53 [2020-10-13 09:10:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:53,117 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:10:53,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:10:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:10:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 09:10:53,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:53,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:53,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:10:53,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash 702573530, now seen corresponding path program 1 times [2020-10-13 09:10:53,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:53,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97337413] [2020-10-13 09:10:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:55,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:55,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:10:55,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:10:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-10-13 09:10:55,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:10:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:10:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:10:55,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:56,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:56,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:10:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:56,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:56,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:10:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:10:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:10:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:56,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97337413] [2020-10-13 09:10:56,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:56,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:10:56,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282626754] [2020-10-13 09:10:56,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:10:56,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:10:56,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:10:56,549 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-13 09:11:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:05,113 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-13 09:11:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:11:05,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-13 09:11:05,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:05,124 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 09:11:05,125 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 09:11:05,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:11:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 09:11:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-13 09:11:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:11:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-13 09:11:05,179 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 122 [2020-10-13 09:11:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:05,179 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-13 09:11:05,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:11:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-13 09:11:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 09:11:05,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:05,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:05,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:11:05,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash 741212625, now seen corresponding path program 1 times [2020-10-13 09:11:05,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:05,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519679219] [2020-10-13 09:11:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:07,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:11:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1741 [2020-10-13 09:11:07,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:11:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:11:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:07,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:07,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:07,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:11:07,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:07,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:07,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:11:07,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:11:07,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:11:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:11:07,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519679219] [2020-10-13 09:11:07,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:07,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:07,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642645503] [2020-10-13 09:11:07,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:07,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:07,334 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 5 states. [2020-10-13 09:11:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:15,556 INFO L93 Difference]: Finished difference Result 1699 states and 2367 transitions. [2020-10-13 09:11:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:15,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-13 09:11:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:15,564 INFO L225 Difference]: With dead ends: 1699 [2020-10-13 09:11:15,564 INFO L226 Difference]: Without dead ends: 1014 [2020-10-13 09:11:15,566 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 [2020-10-13 09:11:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-13 09:11:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1010. [2020-10-13 09:11:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-13 09:11:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1294 transitions. [2020-10-13 09:11:15,597 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1294 transitions. Word has length 133 [2020-10-13 09:11:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:15,598 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1294 transitions. [2020-10-13 09:11:15,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1294 transitions. [2020-10-13 09:11:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 09:11:15,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:15,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:15,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:11:15,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:15,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1535074815, now seen corresponding path program 1 times [2020-10-13 09:11:15,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:15,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228689266] [2020-10-13 09:11:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:16,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:11:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-13 09:11:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:11:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:11:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:16,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:16,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:16,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:11:16,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:16,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:11:16,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:11:16,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228689266] [2020-10-13 09:11:16,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:16,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:16,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251517481] [2020-10-13 09:11:16,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:16,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:16,726 INFO L87 Difference]: Start difference. First operand 1010 states and 1294 transitions. Second operand 5 states. [2020-10-13 09:11:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:23,602 INFO L93 Difference]: Finished difference Result 2693 states and 3529 transitions. [2020-10-13 09:11:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:23,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 09:11:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:23,615 INFO L225 Difference]: With dead ends: 2693 [2020-10-13 09:11:23,615 INFO L226 Difference]: Without dead ends: 1689 [2020-10-13 09:11:23,619 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 [2020-10-13 09:11:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-10-13 09:11:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1682. [2020-10-13 09:11:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-10-13 09:11:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2190 transitions. [2020-10-13 09:11:23,676 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2190 transitions. Word has length 138 [2020-10-13 09:11:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:23,678 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 2190 transitions. [2020-10-13 09:11:23,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2190 transitions. [2020-10-13 09:11:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 09:11:23,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:23,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:23,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:11:23,687 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:23,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:23,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1907085859, now seen corresponding path program 1 times [2020-10-13 09:11:23,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:23,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236721010] [2020-10-13 09:11:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:25,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:25,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:11:25,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:11:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-13 09:11:25,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 09:11:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:11:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:25,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:25,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:25,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:25,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:25,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:25,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:11:25,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:11:25,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:11:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:11:25,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:11:25,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236721010] [2020-10-13 09:11:25,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:11:25,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:11:25,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732616099] [2020-10-13 09:11:25,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:25,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:25,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:25,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:25,770 INFO L87 Difference]: Start difference. First operand 1682 states and 2190 transitions. Second operand 5 states. [2020-10-13 09:11:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:36,834 INFO L93 Difference]: Finished difference Result 4948 states and 6533 transitions. [2020-10-13 09:11:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:36,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-13 09:11:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:36,859 INFO L225 Difference]: With dead ends: 4948 [2020-10-13 09:11:36,860 INFO L226 Difference]: Without dead ends: 3272 [2020-10-13 09:11:36,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-10-13 09:11:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3246. [2020-10-13 09:11:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3246 states. [2020-10-13 09:11:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4213 transitions. [2020-10-13 09:11:36,963 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4213 transitions. Word has length 139 [2020-10-13 09:11:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:36,964 INFO L479 AbstractCegarLoop]: Abstraction has 3246 states and 4213 transitions. [2020-10-13 09:11:36,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4213 transitions. [2020-10-13 09:11:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 09:11:36,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:36,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:36,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:11:36,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:36,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1723824211, now seen corresponding path program 1 times [2020-10-13 09:11:36,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:36,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701273839] [2020-10-13 09:11:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:37,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:11:37,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-13 09:11:37,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:11:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:11:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:37,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:11:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:37,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:11:37,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:37,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:11:37,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:11:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:11:37,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701273839] [2020-10-13 09:11:37,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:37,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:37,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189107990] [2020-10-13 09:11:37,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:37,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:37,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:37,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:37,998 INFO L87 Difference]: Start difference. First operand 3246 states and 4213 transitions. Second operand 5 states. [2020-10-13 09:11:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:44,253 INFO L93 Difference]: Finished difference Result 8967 states and 11856 transitions. [2020-10-13 09:11:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:44,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 09:11:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:44,296 INFO L225 Difference]: With dead ends: 8967 [2020-10-13 09:11:44,296 INFO L226 Difference]: Without dead ends: 5727 [2020-10-13 09:11:44,308 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 [2020-10-13 09:11:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2020-10-13 09:11:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 5412. [2020-10-13 09:11:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5412 states. [2020-10-13 09:11:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 6603 transitions. [2020-10-13 09:11:44,485 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 6603 transitions. Word has length 156 [2020-10-13 09:11:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:44,486 INFO L479 AbstractCegarLoop]: Abstraction has 5412 states and 6603 transitions. [2020-10-13 09:11:44,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 6603 transitions. [2020-10-13 09:11:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-13 09:11:44,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:44,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:44,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:11:44,497 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash 21818720, now seen corresponding path program 1 times [2020-10-13 09:11:44,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:44,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923946851] [2020-10-13 09:11:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-13 09:11:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:11:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 09:11:49,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:11:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:11:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:49,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:11:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:11:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:11:49,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:11:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:11:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 09:11:50,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:11:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:11:50,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923946851] [2020-10-13 09:11:50,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:50,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:50,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276411842] [2020-10-13 09:11:50,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:50,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:50,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:50,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:50,440 INFO L87 Difference]: Start difference. First operand 5412 states and 6603 transitions. Second operand 5 states. [2020-10-13 09:11:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:58,234 INFO L93 Difference]: Finished difference Result 13045 states and 16070 transitions. [2020-10-13 09:11:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:58,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 364 [2020-10-13 09:11:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:58,277 INFO L225 Difference]: With dead ends: 13045 [2020-10-13 09:11:58,278 INFO L226 Difference]: Without dead ends: 7639 [2020-10-13 09:11:58,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2020-10-13 09:11:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7631. [2020-10-13 09:11:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7631 states. [2020-10-13 09:11:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7631 states to 7631 states and 9369 transitions. [2020-10-13 09:11:58,523 INFO L78 Accepts]: Start accepts. Automaton has 7631 states and 9369 transitions. Word has length 364 [2020-10-13 09:11:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:58,524 INFO L479 AbstractCegarLoop]: Abstraction has 7631 states and 9369 transitions. [2020-10-13 09:11:58,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7631 states and 9369 transitions. [2020-10-13 09:11:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-13 09:11:58,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:58,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:58,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:11:58,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash 769581038, now seen corresponding path program 1 times [2020-10-13 09:11:58,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:58,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221908987] [2020-10-13 09:11:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:03,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:03,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-13 09:12:03,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:12:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-13 09:12:03,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-13 09:12:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:12:03,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:03,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:03,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:03,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:12:03,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:04,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:04,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:12:04,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:12:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-13 09:12:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:04,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:12:04,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:12:04,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:12:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 09:12:04,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221908987] [2020-10-13 09:12:04,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:04,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:04,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114587385] [2020-10-13 09:12:04,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:04,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:04,822 INFO L87 Difference]: Start difference. First operand 7631 states and 9369 transitions. Second operand 5 states. [2020-10-13 09:12:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:10,725 INFO L93 Difference]: Finished difference Result 15289 states and 18787 transitions. [2020-10-13 09:12:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:10,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 400 [2020-10-13 09:12:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:10,778 INFO L225 Difference]: With dead ends: 15289 [2020-10-13 09:12:10,779 INFO L226 Difference]: Without dead ends: 7635 [2020-10-13 09:12:10,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2020-10-13 09:12:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7631. [2020-10-13 09:12:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7631 states. [2020-10-13 09:12:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7631 states to 7631 states and 9367 transitions. [2020-10-13 09:12:10,978 INFO L78 Accepts]: Start accepts. Automaton has 7631 states and 9367 transitions. Word has length 400 [2020-10-13 09:12:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:10,979 INFO L479 AbstractCegarLoop]: Abstraction has 7631 states and 9367 transitions. [2020-10-13 09:12:10,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7631 states and 9367 transitions. [2020-10-13 09:12:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-13 09:12:10,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:10,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:10,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:12:10,992 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:10,993 INFO L82 PathProgramCache]: Analyzing trace with hash 609247136, now seen corresponding path program 1 times [2020-10-13 09:12:10,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:10,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911368444] [2020-10-13 09:12:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-13 09:12:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:12:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:12:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-13 09:12:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:12:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:12:16,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:16,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:12:16,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:12:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:12:16,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:12:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:12:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:12:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:12:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-13 09:12:16,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911368444] [2020-10-13 09:12:16,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:16,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:16,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127038383] [2020-10-13 09:12:16,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:16,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:16,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:16,558 INFO L87 Difference]: Start difference. First operand 7631 states and 9367 transitions. Second operand 5 states. [2020-10-13 09:12:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:23,790 INFO L93 Difference]: Finished difference Result 19603 states and 24746 transitions. [2020-10-13 09:12:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:23,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-10-13 09:12:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:23,838 INFO L225 Difference]: With dead ends: 19603 [2020-10-13 09:12:23,839 INFO L226 Difference]: Without dead ends: 11978 [2020-10-13 09:12:23,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11978 states. [2020-10-13 09:12:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11978 to 11050. [2020-10-13 09:12:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11050 states. [2020-10-13 09:12:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11050 states to 11050 states and 13282 transitions. [2020-10-13 09:12:24,133 INFO L78 Accepts]: Start accepts. Automaton has 11050 states and 13282 transitions. Word has length 409 [2020-10-13 09:12:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:24,134 INFO L479 AbstractCegarLoop]: Abstraction has 11050 states and 13282 transitions. [2020-10-13 09:12:24,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11050 states and 13282 transitions. [2020-10-13 09:12:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-13 09:12:24,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:24,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:24,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:12:24,148 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash 173748118, now seen corresponding path program 1 times [2020-10-13 09:12:24,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:24,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551159494] [2020-10-13 09:12:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:29,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:12:29,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:29,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:29,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:12:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:12:29,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:29,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:12:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:29,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:12:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 09:12:29,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551159494] [2020-10-13 09:12:29,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:29,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:29,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326758221] [2020-10-13 09:12:29,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:29,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:29,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:29,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:29,701 INFO L87 Difference]: Start difference. First operand 11050 states and 13282 transitions. Second operand 5 states. [2020-10-13 09:12:37,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:37,441 INFO L93 Difference]: Finished difference Result 26427 states and 32751 transitions. [2020-10-13 09:12:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:37,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-13 09:12:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:37,501 INFO L225 Difference]: With dead ends: 26427 [2020-10-13 09:12:37,502 INFO L226 Difference]: Without dead ends: 15383 [2020-10-13 09:12:37,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15383 states. [2020-10-13 09:12:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15383 to 14144. [2020-10-13 09:12:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14144 states. [2020-10-13 09:12:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14144 states to 14144 states and 17136 transitions. [2020-10-13 09:12:37,979 INFO L78 Accepts]: Start accepts. Automaton has 14144 states and 17136 transitions. Word has length 413 [2020-10-13 09:12:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:37,980 INFO L479 AbstractCegarLoop]: Abstraction has 14144 states and 17136 transitions. [2020-10-13 09:12:37,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 14144 states and 17136 transitions. [2020-10-13 09:12:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-13 09:12:37,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:37,999 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:37,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:12:38,000 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1446580827, now seen corresponding path program 1 times [2020-10-13 09:12:38,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:38,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929477374] [2020-10-13 09:12:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:38,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:43,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-13 09:12:43,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:12:43,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 09:12:43,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 321 [2020-10-13 09:12:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:12:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:43,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:43,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:43,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:43,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:43,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:43,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:43,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:12:43,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:12:43,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:12:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:43,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:43,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:12:43,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:43,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:12:43,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:12:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-13 09:12:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:43,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:43,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:12:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:12:43,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929477374] [2020-10-13 09:12:43,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:43,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:43,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340070725] [2020-10-13 09:12:43,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:43,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:43,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:43,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:43,899 INFO L87 Difference]: Start difference. First operand 14144 states and 17136 transitions. Second operand 7 states. [2020-10-13 09:12:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:52,989 INFO L93 Difference]: Finished difference Result 28642 states and 36250 transitions. [2020-10-13 09:12:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:12:52,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 441 [2020-10-13 09:12:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:53,055 INFO L225 Difference]: With dead ends: 28642 [2020-10-13 09:12:53,056 INFO L226 Difference]: Without dead ends: 14484 [2020-10-13 09:12:53,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:12:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14484 states. [2020-10-13 09:12:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14484 to 14294. [2020-10-13 09:12:53,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14294 states. [2020-10-13 09:12:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14294 states to 14294 states and 17514 transitions. [2020-10-13 09:12:53,448 INFO L78 Accepts]: Start accepts. Automaton has 14294 states and 17514 transitions. Word has length 441 [2020-10-13 09:12:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:53,448 INFO L479 AbstractCegarLoop]: Abstraction has 14294 states and 17514 transitions. [2020-10-13 09:12:53,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14294 states and 17514 transitions. [2020-10-13 09:12:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-13 09:12:53,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:53,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:53,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:12:53,464 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1946668178, now seen corresponding path program 1 times [2020-10-13 09:12:53,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:53,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912316013] [2020-10-13 09:12:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:58,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:58,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-13 09:12:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:12:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:12:58,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-13 09:12:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:12:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:58,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:58,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:58,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:12:58,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:58,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:58,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:58,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:12:58,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:12:58,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:12:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:12:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:12:58,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 09:12:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:12:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-13 09:12:59,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912316013] [2020-10-13 09:12:59,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:12:59,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:12:59,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265374623] [2020-10-13 09:12:59,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:59,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:59,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:59,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:59,140 INFO L87 Difference]: Start difference. First operand 14294 states and 17514 transitions. Second operand 5 states. [2020-10-13 09:13:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:09,502 INFO L93 Difference]: Finished difference Result 38827 states and 48267 transitions. [2020-10-13 09:13:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:09,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 452 [2020-10-13 09:13:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:09,567 INFO L225 Difference]: With dead ends: 38827 [2020-10-13 09:13:09,567 INFO L226 Difference]: Without dead ends: 24539 [2020-10-13 09:13:09,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24539 states. [2020-10-13 09:13:10,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24539 to 24513. [2020-10-13 09:13:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24513 states. [2020-10-13 09:13:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24513 states to 24513 states and 29672 transitions. [2020-10-13 09:13:10,093 INFO L78 Accepts]: Start accepts. Automaton has 24513 states and 29672 transitions. Word has length 452 [2020-10-13 09:13:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:10,094 INFO L479 AbstractCegarLoop]: Abstraction has 24513 states and 29672 transitions. [2020-10-13 09:13:10,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24513 states and 29672 transitions. [2020-10-13 09:13:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-13 09:13:10,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:10,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:10,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:13:10,108 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:10,109 INFO L82 PathProgramCache]: Analyzing trace with hash 623020023, now seen corresponding path program 1 times [2020-10-13 09:13:10,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:10,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612753453] [2020-10-13 09:13:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-13 09:13:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:13:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:13:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:13:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:13:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:13:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:15,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:15,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:15,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:15,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:15,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:15,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:15,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:13:15,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 09:13:15,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:13:15,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:13:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:16,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:13:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:13:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 09:13:16,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:13:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:13:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:13:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-13 09:13:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:13:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 09:13:16,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612753453] [2020-10-13 09:13:16,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:16,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:13:16,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964527857] [2020-10-13 09:13:16,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:13:16,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:13:16,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:13:16,889 INFO L87 Difference]: Start difference. First operand 24513 states and 29672 transitions. Second operand 10 states. [2020-10-13 09:13:17,099 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:13:17,420 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 09:13:17,616 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-13 09:13:18,984 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-13 09:13:19,407 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-13 09:13:19,658 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-13 09:13:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:28,196 INFO L93 Difference]: Finished difference Result 49234 states and 59828 transitions. [2020-10-13 09:13:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 09:13:28,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 488 [2020-10-13 09:13:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:28,258 INFO L225 Difference]: With dead ends: 49234 [2020-10-13 09:13:28,259 INFO L226 Difference]: Without dead ends: 24634 [2020-10-13 09:13:28,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-13 09:13:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24634 states. [2020-10-13 09:13:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24634 to 24565. [2020-10-13 09:13:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24565 states. [2020-10-13 09:13:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24565 states to 24565 states and 29808 transitions. [2020-10-13 09:13:28,700 INFO L78 Accepts]: Start accepts. Automaton has 24565 states and 29808 transitions. Word has length 488 [2020-10-13 09:13:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:28,700 INFO L479 AbstractCegarLoop]: Abstraction has 24565 states and 29808 transitions. [2020-10-13 09:13:28,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:13:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 24565 states and 29808 transitions. [2020-10-13 09:13:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-13 09:13:28,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:28,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:28,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:13:28,714 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash 140017879, now seen corresponding path program 1 times [2020-10-13 09:13:28,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:28,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278217175] [2020-10-13 09:13:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:33,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-13 09:13:33,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:13:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:13:33,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 453 [2020-10-13 09:13:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:13:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:33,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:33,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:33,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:13:33,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:33,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:13:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:13:33,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:34,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:13:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:34,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:13:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:34,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:13:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-13 09:13:34,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278217175] [2020-10-13 09:13:34,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:34,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:34,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018677780] [2020-10-13 09:13:34,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:34,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:34,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:34,431 INFO L87 Difference]: Start difference. First operand 24565 states and 29808 transitions. Second operand 5 states. [2020-10-13 09:13:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:44,295 INFO L93 Difference]: Finished difference Result 53830 states and 65825 transitions. [2020-10-13 09:13:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:44,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 492 [2020-10-13 09:13:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:44,377 INFO L225 Difference]: With dead ends: 53830 [2020-10-13 09:13:44,377 INFO L226 Difference]: Without dead ends: 29271 [2020-10-13 09:13:44,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29271 states. [2020-10-13 09:13:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29271 to 29246. [2020-10-13 09:13:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29246 states. [2020-10-13 09:13:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29246 states to 29246 states and 35475 transitions. [2020-10-13 09:13:44,970 INFO L78 Accepts]: Start accepts. Automaton has 29246 states and 35475 transitions. Word has length 492 [2020-10-13 09:13:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:44,971 INFO L479 AbstractCegarLoop]: Abstraction has 29246 states and 35475 transitions. [2020-10-13 09:13:44,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 29246 states and 35475 transitions. [2020-10-13 09:13:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-13 09:13:44,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:44,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:13:44,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:13:44,984 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1942623417, now seen corresponding path program 1 times [2020-10-13 09:13:44,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:44,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311896976] [2020-10-13 09:13:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:50,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:13:50,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:13:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:13:50,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 479 [2020-10-13 09:13:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:13:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:50,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:50,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:50,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:50,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:13:50,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:13:50,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:50,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:13:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:50,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:50,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:13:50,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:13:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:50,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:13:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:13:50,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 09:13:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-10-13 09:13:50,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311896976] [2020-10-13 09:13:50,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:50,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:50,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93117068] [2020-10-13 09:13:50,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:50,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:50,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:50,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:50,758 INFO L87 Difference]: Start difference. First operand 29246 states and 35475 transitions. Second operand 5 states. [2020-10-13 09:14:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:00,351 INFO L93 Difference]: Finished difference Result 62871 states and 76412 transitions. [2020-10-13 09:14:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:00,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 518 [2020-10-13 09:14:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:00,453 INFO L225 Difference]: With dead ends: 62871 [2020-10-13 09:14:00,453 INFO L226 Difference]: Without dead ends: 33631 [2020-10-13 09:14:00,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33631 states. [2020-10-13 09:14:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33631 to 33601. [2020-10-13 09:14:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33601 states. [2020-10-13 09:14:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33601 states to 33601 states and 40411 transitions. [2020-10-13 09:14:01,028 INFO L78 Accepts]: Start accepts. Automaton has 33601 states and 40411 transitions. Word has length 518 [2020-10-13 09:14:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:01,028 INFO L479 AbstractCegarLoop]: Abstraction has 33601 states and 40411 transitions. [2020-10-13 09:14:01,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 33601 states and 40411 transitions. [2020-10-13 09:14:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-13 09:14:01,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:01,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:14:01,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:14:01,042 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:01,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2069635999, now seen corresponding path program 1 times [2020-10-13 09:14:01,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:01,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498430128] [2020-10-13 09:14:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:06,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:06,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-13 09:14:06,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:14:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:14:06,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-13 09:14:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:14:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:06,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:06,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:14:06,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:14:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:14:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:06,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:14:06,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:14:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:14:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:06,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:14:06,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:14:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 09:14:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-13 09:14:06,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498430128] [2020-10-13 09:14:06,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:06,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:06,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954608315] [2020-10-13 09:14:06,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:06,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:06,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:06,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:06,675 INFO L87 Difference]: Start difference. First operand 33601 states and 40411 transitions. Second operand 5 states. [2020-10-13 09:14:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:16,330 INFO L93 Difference]: Finished difference Result 73596 states and 89826 transitions. [2020-10-13 09:14:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:16,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 529 [2020-10-13 09:14:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:16,421 INFO L225 Difference]: With dead ends: 73596 [2020-10-13 09:14:16,421 INFO L226 Difference]: Without dead ends: 40001 [2020-10-13 09:14:16,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40001 states. [2020-10-13 09:14:17,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40001 to 39993. [2020-10-13 09:14:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39993 states. [2020-10-13 09:14:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39993 states to 39993 states and 47620 transitions. [2020-10-13 09:14:17,095 INFO L78 Accepts]: Start accepts. Automaton has 39993 states and 47620 transitions. Word has length 529 [2020-10-13 09:14:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:17,096 INFO L479 AbstractCegarLoop]: Abstraction has 39993 states and 47620 transitions. [2020-10-13 09:14:17,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 39993 states and 47620 transitions. [2020-10-13 09:14:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-13 09:14:17,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:17,123 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:17,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:14:17,124 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:17,124 INFO L82 PathProgramCache]: Analyzing trace with hash -556149272, now seen corresponding path program 1 times [2020-10-13 09:14:17,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:17,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931282854] [2020-10-13 09:14:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:22,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-13 09:14:22,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:14:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:14:22,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 453 [2020-10-13 09:14:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:14:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:22,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:22,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:22,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:22,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:22,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:14:22,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:14:22,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:22,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:14:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:22,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:14:22,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:22,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:14:22,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:22,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:14:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:22,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:14:22,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:22,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:14:22,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:14:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:22,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-13 09:14:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking...