/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem03_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:13:17,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:13:17,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:13:17,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:13:17,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:13:17,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:13:17,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:13:17,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:13:17,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:13:17,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:13:17,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:13:17,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:13:17,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:13:17,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:13:17,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:13:17,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:13:17,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:13:17,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:13:17,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:13:17,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:13:17,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:13:17,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:13:17,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:13:17,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:13:17,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:13:17,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:13:17,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:13:17,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:13:17,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:13:17,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:13:17,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:13:17,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:13:17,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:13:17,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:13:17,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:13:17,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:13:17,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:13:17,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:13:17,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:13:17,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:13:17,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:13:17,103 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 [2020-10-14 19:13:17,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:13:17,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:13:17,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:13:17,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:13:17,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:13:17,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:13:17,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:13:17,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:13:17,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:13:17,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:13:17,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:13:17,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:13:17,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:13:17,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:13:17,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:13:17,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:13:17,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:13:17,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:13:17,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:13:17,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:13:17,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:13:17,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:13:17,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:13:17,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:13:17,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:13:17,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:13:17,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:13:17,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:13:17,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:13:17,133 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:13:17,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:13:17,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:13:17,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:13:17,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:13:17,481 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:13:17,482 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label33.c [2020-10-14 19:13:17,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b2da87ac/0f6099e9ab67485aa21c06403f3ab373/FLAG26e5d631a [2020-10-14 19:13:18,239 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:13:18,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label33.c [2020-10-14 19:13:18,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b2da87ac/0f6099e9ab67485aa21c06403f3ab373/FLAG26e5d631a [2020-10-14 19:13:18,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b2da87ac/0f6099e9ab67485aa21c06403f3ab373 [2020-10-14 19:13:18,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:13:18,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:13:18,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:13:18,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:13:18,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:13:18,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:13:18" (1/1) ... [2020-10-14 19:13:18,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fc715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:18, skipping insertion in model container [2020-10-14 19:13:18,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:13:18" (1/1) ... [2020-10-14 19:13:18,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:13:18,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:13:19,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:13:19,378 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:13:19,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:13:19,709 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:13:19,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19 WrapperNode [2020-10-14 19:13:19,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:13:19,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:13:19,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:13:19,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:13:19,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (1/1) ... [2020-10-14 19:13:19,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:13:19,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:13:19,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:13:19,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:13:19,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (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 [2020-10-14 19:13:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:13:19,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:13:19,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:13:19,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:13:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:13:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:13:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:13:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:13:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:13:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:13:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:13:21,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:13:21,978 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:13:21,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:13:21 BoogieIcfgContainer [2020-10-14 19:13:21,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:13:21,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:13:21,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:13:21,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:13:21,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:13:18" (1/3) ... [2020-10-14 19:13:21,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18289fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:13:21, skipping insertion in model container [2020-10-14 19:13:21,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:19" (2/3) ... [2020-10-14 19:13:21,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18289fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:13:21, skipping insertion in model container [2020-10-14 19:13:21,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:13:21" (3/3) ... [2020-10-14 19:13:21,995 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label33.c [2020-10-14 19:13:22,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:13:22,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:13:22,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:13:22,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:13:22,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:13:22,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:13:22,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:13:22,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:13:22,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:13:22,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:13:22,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:13:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:13:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 19:13:22,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:22,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:22,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash 10375448, now seen corresponding path program 1 times [2020-10-14 19:13:22,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:22,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712295073] [2020-10-14 19:13:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:26,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 19:13:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3778 [2020-10-14 19:13:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:26,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:13:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:13:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:13:26,883 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:26,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:26,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:26,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:13:26,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:26,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:27,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712295073] [2020-10-14 19:13:27,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:13:27,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:13:27,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885160034] [2020-10-14 19:13:27,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:27,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:27,184 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:13:27,360 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:27,796 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:13:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:31,407 INFO L93 Difference]: Finished difference Result 1121 states and 1986 transitions. [2020-10-14 19:13:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:13:31,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 19:13:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:31,449 INFO L225 Difference]: With dead ends: 1121 [2020-10-14 19:13:31,449 INFO L226 Difference]: Without dead ends: 700 [2020-10-14 19:13:31,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-14 19:13:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 690. [2020-10-14 19:13:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-14 19:13:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1059 transitions. [2020-10-14 19:13:31,602 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1059 transitions. Word has length 165 [2020-10-14 19:13:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:31,605 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 1059 transitions. [2020-10-14 19:13:31,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1059 transitions. [2020-10-14 19:13:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 19:13:31,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:31,624 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:13:31,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:13:31,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash 977216300, now seen corresponding path program 1 times [2020-10-14 19:13:31,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:31,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990637839] [2020-10-14 19:13:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:34,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:34,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 19:13:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3239 [2020-10-14 19:13:34,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:34,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:13:34,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 19:13:34,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:13:35,340 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:35,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:35,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:13:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:35,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:35,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:35,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:13:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:35,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:13:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:13:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:35,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990637839] [2020-10-14 19:13:35,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:35,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:35,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267401580] [2020-10-14 19:13:35,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:35,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:35,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:35,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:35,670 INFO L87 Difference]: Start difference. First operand 690 states and 1059 transitions. Second operand 5 states. [2020-10-14 19:13:35,886 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:38,512 INFO L93 Difference]: Finished difference Result 2027 states and 3164 transitions. [2020-10-14 19:13:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:38,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-14 19:13:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:38,521 INFO L225 Difference]: With dead ends: 2027 [2020-10-14 19:13:38,521 INFO L226 Difference]: Without dead ends: 1343 [2020-10-14 19:13:38,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-10-14 19:13:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1321. [2020-10-14 19:13:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-14 19:13:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 2011 transitions. [2020-10-14 19:13:38,580 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 2011 transitions. Word has length 177 [2020-10-14 19:13:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:38,580 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 2011 transitions. [2020-10-14 19:13:38,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 2011 transitions. [2020-10-14 19:13:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 19:13:38,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:38,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:38,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:13:38,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:38,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:38,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1859025983, now seen corresponding path program 1 times [2020-10-14 19:13:38,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:38,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872905718] [2020-10-14 19:13:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 19:13:40,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2290 [2020-10-14 19:13:40,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:40,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 19:13:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 19:13:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:41,204 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:41,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:41,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:41,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:41,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:13:41,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:41,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:41,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:41,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:41,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:13:41,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:13:41,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:41,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:13:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:41,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872905718] [2020-10-14 19:13:41,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:41,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:41,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089049537] [2020-10-14 19:13:41,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:41,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:41,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:41,545 INFO L87 Difference]: Start difference. First operand 1321 states and 2011 transitions. Second operand 5 states. [2020-10-14 19:13:41,740 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:44,433 INFO L93 Difference]: Finished difference Result 3905 states and 6080 transitions. [2020-10-14 19:13:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:44,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 19:13:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:44,451 INFO L225 Difference]: With dead ends: 3905 [2020-10-14 19:13:44,452 INFO L226 Difference]: Without dead ends: 2590 [2020-10-14 19:13:44,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2020-10-14 19:13:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2578. [2020-10-14 19:13:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-10-14 19:13:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3821 transitions. [2020-10-14 19:13:44,577 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3821 transitions. Word has length 192 [2020-10-14 19:13:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:44,583 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 3821 transitions. [2020-10-14 19:13:44,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3821 transitions. [2020-10-14 19:13:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 19:13:44,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:44,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-14 19:13:44,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:13:44,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1028314208, now seen corresponding path program 1 times [2020-10-14 19:13:44,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:44,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599875672] [2020-10-14 19:13:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:47,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:47,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 19:13:47,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3332 [2020-10-14 19:13:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:47,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 19:13:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 19:13:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:48,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:48,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:48,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:13:48,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:48,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:48,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:48,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:48,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:13:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:13:48,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:48,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:13:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:13:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:13:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:13:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:48,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:13:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:13:48,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599875672] [2020-10-14 19:13:48,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:48,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:48,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006286190] [2020-10-14 19:13:48,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:48,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:48,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:48,440 INFO L87 Difference]: Start difference. First operand 2578 states and 3821 transitions. Second operand 5 states. [2020-10-14 19:13:48,659 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:51,164 INFO L93 Difference]: Finished difference Result 7665 states and 11687 transitions. [2020-10-14 19:13:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:51,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-14 19:13:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:51,198 INFO L225 Difference]: With dead ends: 7665 [2020-10-14 19:13:51,198 INFO L226 Difference]: Without dead ends: 5093 [2020-10-14 19:13:51,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2020-10-14 19:13:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 5087. [2020-10-14 19:13:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5087 states. [2020-10-14 19:13:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 6941 transitions. [2020-10-14 19:13:51,421 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 6941 transitions. Word has length 195 [2020-10-14 19:13:51,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:51,422 INFO L479 AbstractCegarLoop]: Abstraction has 5087 states and 6941 transitions. [2020-10-14 19:13:51,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 6941 transitions. [2020-10-14 19:13:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 19:13:51,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:51,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:51,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:13:51,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash 905284202, now seen corresponding path program 1 times [2020-10-14 19:13:51,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:51,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19414133] [2020-10-14 19:13:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 19:13:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2844 [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 19:13:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:54,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:13:54,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:54,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:54,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:54,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:13:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 19:13:54,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 19:13:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:54,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19414133] [2020-10-14 19:13:54,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:54,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:54,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949925676] [2020-10-14 19:13:54,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:54,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:54,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:54,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:54,778 INFO L87 Difference]: Start difference. First operand 5087 states and 6941 transitions. Second operand 5 states. [2020-10-14 19:13:54,905 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:57,472 INFO L93 Difference]: Finished difference Result 14584 states and 20426 transitions. [2020-10-14 19:13:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:57,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-14 19:13:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:57,535 INFO L225 Difference]: With dead ends: 14584 [2020-10-14 19:13:57,535 INFO L226 Difference]: Without dead ends: 9503 [2020-10-14 19:13:57,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9503 states. [2020-10-14 19:13:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9503 to 9480. [2020-10-14 19:13:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9480 states. [2020-10-14 19:13:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9480 states to 9480 states and 13272 transitions. [2020-10-14 19:13:57,913 INFO L78 Accepts]: Start accepts. Automaton has 9480 states and 13272 transitions. Word has length 210 [2020-10-14 19:13:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:57,913 INFO L479 AbstractCegarLoop]: Abstraction has 9480 states and 13272 transitions. [2020-10-14 19:13:57,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 9480 states and 13272 transitions. [2020-10-14 19:13:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 19:13:57,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:57,953 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:13:57,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:13:57,953 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:57,954 INFO L82 PathProgramCache]: Analyzing trace with hash -765128288, now seen corresponding path program 1 times [2020-10-14 19:13:57,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:57,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926618729] [2020-10-14 19:13:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:58,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:03,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:03,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 19:14:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:14:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:14:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:14:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 19:14:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:03,221 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:03,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:14:03,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:03,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:03,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:14:03,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:14:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:03,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:03,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:14:03,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 19:14:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:03,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 19:14:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 19:14:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:03,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:03,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:03,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:14:03,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:03,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:14:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:14:03,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926618729] [2020-10-14 19:14:03,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:03,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:14:03,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517020654] [2020-10-14 19:14:03,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:14:03,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:03,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:14:03,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:03,743 INFO L87 Difference]: Start difference. First operand 9480 states and 13272 transitions. Second operand 8 states. [2020-10-14 19:14:04,086 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:04,276 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:06,946 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:10,710 INFO L93 Difference]: Finished difference Result 46493 states and 74954 transitions. [2020-10-14 19:14:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:14:10,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-10-14 19:14:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:10,952 INFO L225 Difference]: With dead ends: 46493 [2020-10-14 19:14:10,953 INFO L226 Difference]: Without dead ends: 37019 [2020-10-14 19:14:11,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:14:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37019 states. [2020-10-14 19:14:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37019 to 36848. [2020-10-14 19:14:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36848 states. [2020-10-14 19:14:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36848 states to 36848 states and 56327 transitions. [2020-10-14 19:14:12,559 INFO L78 Accepts]: Start accepts. Automaton has 36848 states and 56327 transitions. Word has length 279 [2020-10-14 19:14:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:12,559 INFO L479 AbstractCegarLoop]: Abstraction has 36848 states and 56327 transitions. [2020-10-14 19:14:12,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:14:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 36848 states and 56327 transitions. [2020-10-14 19:14:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 19:14:12,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:12,778 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:12,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:14:12,778 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1950135415, now seen corresponding path program 1 times [2020-10-14 19:14:12,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:12,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340819436] [2020-10-14 19:14:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:17,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:17,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 19:14:17,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:14:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 19:14:17,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:17,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:17,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:14:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 19:14:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 19:14:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:18,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:18,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:14:18,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:14:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:14:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 19:14:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:14:18,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:14:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:14:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:14:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:18,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 19:14:18,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 19:14:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:18,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:18,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:14:18,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:14:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 181 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 19:14:18,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340819436] [2020-10-14 19:14:18,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:18,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:14:18,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592742327] [2020-10-14 19:14:18,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:14:18,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:18,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:14:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:18,621 INFO L87 Difference]: Start difference. First operand 36848 states and 56327 transitions. Second operand 8 states. [2020-10-14 19:14:18,854 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:19,430 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:26,087 INFO L93 Difference]: Finished difference Result 148453 states and 284354 transitions. [2020-10-14 19:14:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:14:26,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 298 [2020-10-14 19:14:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:27,566 INFO L225 Difference]: With dead ends: 148453 [2020-10-14 19:14:27,566 INFO L226 Difference]: Without dead ends: 111611 [2020-10-14 19:14:27,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:14:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111611 states. [2020-10-14 19:14:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111611 to 107693. [2020-10-14 19:14:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107693 states. [2020-10-14 19:14:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107693 states to 107693 states and 178092 transitions. [2020-10-14 19:14:34,596 INFO L78 Accepts]: Start accepts. Automaton has 107693 states and 178092 transitions. Word has length 298 [2020-10-14 19:14:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:34,597 INFO L479 AbstractCegarLoop]: Abstraction has 107693 states and 178092 transitions. [2020-10-14 19:14:34,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:14:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 107693 states and 178092 transitions. [2020-10-14 19:14:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 19:14:35,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:35,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:35,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:14:35,009 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash 381232014, now seen corresponding path program 1 times [2020-10-14 19:14:35,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:35,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653868832] [2020-10-14 19:14:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:40,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:40,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 19:14:40,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:14:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:14:40,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:40,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:14:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 19:14:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:40,288 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:40,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:40,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:40,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:14:40,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:40,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:40,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:40,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:40,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:14:40,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:14:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:40,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:14:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:40,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 19:14:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:40,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:40,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:14:40,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 19:14:40,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:40,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:14:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 19:14:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:40,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:14:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:40,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:14:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 149 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:14:41,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653868832] [2020-10-14 19:14:41,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:41,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:41,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903632212] [2020-10-14 19:14:41,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:41,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:41,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:41,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:41,035 INFO L87 Difference]: Start difference. First operand 107693 states and 178092 transitions. Second operand 7 states. [2020-10-14 19:14:41,267 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:42,683 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:47,306 INFO L93 Difference]: Finished difference Result 221455 states and 423044 transitions. [2020-10-14 19:14:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:14:47,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-14 19:14:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:48,321 INFO L225 Difference]: With dead ends: 221455 [2020-10-14 19:14:48,321 INFO L226 Difference]: Without dead ends: 113768 [2020-10-14 19:14:48,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:14:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113768 states. [2020-10-14 19:14:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113768 to 108267. [2020-10-14 19:14:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108267 states. [2020-10-14 19:14:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108267 states to 108267 states and 177335 transitions. [2020-10-14 19:14:54,314 INFO L78 Accepts]: Start accepts. Automaton has 108267 states and 177335 transitions. Word has length 299 [2020-10-14 19:14:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:54,315 INFO L479 AbstractCegarLoop]: Abstraction has 108267 states and 177335 transitions. [2020-10-14 19:14:54,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:14:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 108267 states and 177335 transitions. [2020-10-14 19:14:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 19:14:54,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:54,706 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:14:54,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:14:54,706 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash -688733535, now seen corresponding path program 1 times [2020-10-14 19:14:54,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:54,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129058103] [2020-10-14 19:14:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:54,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 19:14:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:14:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 19:14:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:59,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:14:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:14:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:59,938 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:59,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:59,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:59,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:14:59,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:59,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:15:00,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:15:00,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:15:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:15:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:15:00,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-14 19:15:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:15:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:15:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 147 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:15:00,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129058103] [2020-10-14 19:15:00,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:00,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:00,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639076217] [2020-10-14 19:15:00,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:00,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:00,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:00,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:00,917 INFO L87 Difference]: Start difference. First operand 108267 states and 177335 transitions. Second operand 7 states. [2020-10-14 19:15:01,140 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:01,459 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:09,842 INFO L93 Difference]: Finished difference Result 298380 states and 594433 transitions. [2020-10-14 19:15:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:15:09,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 19:15:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:16,837 INFO L225 Difference]: With dead ends: 298380 [2020-10-14 19:15:16,837 INFO L226 Difference]: Without dead ends: 190119 [2020-10-14 19:15:17,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:15:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190119 states. [2020-10-14 19:15:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190119 to 181689. [2020-10-14 19:15:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181689 states. [2020-10-14 19:15:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181689 states to 181689 states and 294615 transitions. [2020-10-14 19:15:25,432 INFO L78 Accepts]: Start accepts. Automaton has 181689 states and 294615 transitions. Word has length 300 [2020-10-14 19:15:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:25,432 INFO L479 AbstractCegarLoop]: Abstraction has 181689 states and 294615 transitions. [2020-10-14 19:15:25,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 181689 states and 294615 transitions. [2020-10-14 19:15:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 19:15:26,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:26,199 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:26,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:15:26,199 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:26,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1778811891, now seen corresponding path program 1 times [2020-10-14 19:15:26,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:26,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755541132] [2020-10-14 19:15:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:31,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5607 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 19:15:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 19:15:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:32,063 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:32,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:32,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:32,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:15:32,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 19:15:32,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:32,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 19:15:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:32,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 19:15:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 19:15:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 19:15:32,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:32,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 19:15:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 19:15:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:15:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 206 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:15:32,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755541132] [2020-10-14 19:15:32,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:32,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:15:32,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304074537] [2020-10-14 19:15:32,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:15:32,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:32,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:15:32,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:15:32,599 INFO L87 Difference]: Start difference. First operand 181689 states and 294615 transitions. Second operand 8 states. [2020-10-14 19:15:32,728 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:33,304 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:42,231 INFO L93 Difference]: Finished difference Result 334455 states and 556295 transitions. [2020-10-14 19:15:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:15:42,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 334 [2020-10-14 19:15:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:42,954 INFO L225 Difference]: With dead ends: 334455 [2020-10-14 19:15:42,954 INFO L226 Difference]: Without dead ends: 182415 [2020-10-14 19:15:43,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:15:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182415 states. [2020-10-14 19:15:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182415 to 181919. [2020-10-14 19:15:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181919 states. [2020-10-14 19:15:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181919 states to 181919 states and 273320 transitions. [2020-10-14 19:15:51,229 INFO L78 Accepts]: Start accepts. Automaton has 181919 states and 273320 transitions. Word has length 334 [2020-10-14 19:15:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:51,230 INFO L479 AbstractCegarLoop]: Abstraction has 181919 states and 273320 transitions. [2020-10-14 19:15:51,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:15:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 181919 states and 273320 transitions. [2020-10-14 19:15:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-14 19:15:52,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:52,065 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:15:52,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:15:52,065 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:52,066 INFO L82 PathProgramCache]: Analyzing trace with hash -736982730, now seen corresponding path program 1 times [2020-10-14 19:15:52,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:52,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764393830] [2020-10-14 19:15:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:52,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:59,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7219 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 19:15:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:59,516 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:59,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:59,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:59,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:59,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:59,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:15:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:59,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:15:59,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 19:15:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:59,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 19:15:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:59,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 19:15:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 19:15:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:59,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 19:15:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:00,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-14 19:16:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:00,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:00,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:00,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 297 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 19:16:00,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764393830] [2020-10-14 19:16:00,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:00,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:00,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550512934] [2020-10-14 19:16:00,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:00,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:00,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:00,142 INFO L87 Difference]: Start difference. First operand 181919 states and 273320 transitions. Second operand 7 states. [2020-10-14 19:16:00,390 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:16:01,383 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:16:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:10,446 INFO L93 Difference]: Finished difference Result 395889 states and 665973 transitions. [2020-10-14 19:16:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:10,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-14 19:16:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:10,447 INFO L225 Difference]: With dead ends: 395889 [2020-10-14 19:16:10,447 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 19:16:12,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 19:16:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 19:16:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 19:16:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 19:16:12,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 380 [2020-10-14 19:16:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:12,064 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 19:16:12,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 19:16:12,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 19:16:12,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:16:12,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.