/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:25,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:25,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:25,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:25,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:25,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:25,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:25,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:25,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:25,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:25,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:25,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:25,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:25,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:25,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:25,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:25,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:25,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:25,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:25,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:25,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:25,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:25,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:25,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:25,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:25,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:25,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:25,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:25,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:25,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:25,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:25,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:25,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:25,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:25,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:25,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:25,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:25,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:25,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:25,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:25,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:25,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:28:25,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:25,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:25,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:25,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:25,557 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:25,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:25,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:25,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:25,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:25,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:25,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:25,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:25,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:25,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:25,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:25,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:25,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:25,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:25,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:25,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:25,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:25,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:25,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:25,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:25,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:25,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:25,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:25,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:25,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:25,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:28:26,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:26,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:26,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:26,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:26,040 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:26,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 04:28:26,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4431d19f/c6f9eb5ebadc448cab05a3f155047427/FLAG9fdc68f19 [2020-09-25 04:28:26,822 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:26,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 04:28:26,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4431d19f/c6f9eb5ebadc448cab05a3f155047427/FLAG9fdc68f19 [2020-09-25 04:28:27,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4431d19f/c6f9eb5ebadc448cab05a3f155047427 [2020-09-25 04:28:27,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:27,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:27,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:27,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:27,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:27,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27, skipping insertion in model container [2020-09-25 04:28:27,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:27,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:27,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:27,624 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:27,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:27,859 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:27,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27 WrapperNode [2020-09-25 04:28:27,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:27,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:27,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:27,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:27,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... [2020-09-25 04:28:27,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:27,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:27,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:27,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:27,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:29,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:29,464 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:29,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:29 BoogieIcfgContainer [2020-09-25 04:28:29,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:29,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:29,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:29,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:29,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:27" (1/3) ... [2020-09-25 04:28:29,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394eeac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:29, skipping insertion in model container [2020-09-25 04:28:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:27" (2/3) ... [2020-09-25 04:28:29,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394eeac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:29, skipping insertion in model container [2020-09-25 04:28:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:29" (3/3) ... [2020-09-25 04:28:29,488 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 04:28:29,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:29,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:29,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:29,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:29,585 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:29,585 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:29,585 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:29,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:29,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:29,586 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:29,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 04:28:29,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:29,651 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] [2020-09-25 04:28:29,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:29,661 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 04:28:29,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:29,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073345920] [2020-09-25 04:28:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:28:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:28:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:35,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:35,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:35,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:35,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 04:28:35,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:28:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:35,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:35,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:28:35,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:35,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:35,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073345920] [2020-09-25 04:28:35,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:35,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:28:35,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025634950] [2020-09-25 04:28:35,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:35,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:35,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:35,338 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 04:28:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:37,867 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:28:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:37,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 04:28:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:37,898 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:28:37,898 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:28:37,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:28:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:28:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:28:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:28:38,021 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 04:28:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:38,022 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:28:38,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:28:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:28:38,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:38,033 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] [2020-09-25 04:28:38,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:38,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:38,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 04:28:38,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:38,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985570738] [2020-09-25 04:28:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:28:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:28:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 04:28:43,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 04:28:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:43,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:43,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:28:43,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:43,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:43,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985570738] [2020-09-25 04:28:43,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:43,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:43,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668179503] [2020-09-25 04:28:43,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:43,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:43,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:43,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:43,458 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 04:28:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:45,627 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 04:28:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:45,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 04:28:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:45,635 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 04:28:45,636 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 04:28:45,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 04:28:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 04:28:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 04:28:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 04:28:45,680 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 156 [2020-09-25 04:28:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:45,681 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 04:28:45,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 04:28:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 04:28:45,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:45,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:45,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:45,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 04:28:45,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:45,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203854319] [2020-09-25 04:28:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 04:28:50,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:28:50,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:50,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:28:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 04:28:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:50,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:50,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:50,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:50,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:28:50,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:28:50,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:50,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:28:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:50,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203854319] [2020-09-25 04:28:50,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:50,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:50,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094845408] [2020-09-25 04:28:51,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:51,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:51,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:51,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:51,001 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 04:28:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:53,220 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 04:28:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:53,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 04:28:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:53,239 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 04:28:53,239 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 04:28:53,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 04:28:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 04:28:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 04:28:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 04:28:53,321 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 162 [2020-09-25 04:28:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:53,323 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 04:28:53,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 04:28:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 04:28:53,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:53,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:53,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:53,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -997660219, now seen corresponding path program 1 times [2020-09-25 04:28:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085925226] [2020-09-25 04:28:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:58,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 04:28:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:58,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:58,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:58,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:58,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:58,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:58,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:28:58,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:28:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:28:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:58,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085925226] [2020-09-25 04:28:58,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:58,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:58,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864355507] [2020-09-25 04:28:58,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:58,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:58,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:58,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:58,697 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 5 states. [2020-09-25 04:29:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:00,848 INFO L93 Difference]: Finished difference Result 4518 states and 5602 transitions. [2020-09-25 04:29:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:00,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 04:29:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:00,868 INFO L225 Difference]: With dead ends: 4518 [2020-09-25 04:29:00,868 INFO L226 Difference]: Without dead ends: 2892 [2020-09-25 04:29:00,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-09-25 04:29:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2726. [2020-09-25 04:29:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2020-09-25 04:29:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3280 transitions. [2020-09-25 04:29:00,993 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3280 transitions. Word has length 173 [2020-09-25 04:29:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:00,993 INFO L479 AbstractCegarLoop]: Abstraction has 2726 states and 3280 transitions. [2020-09-25 04:29:00,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3280 transitions. [2020-09-25 04:29:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:29:01,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:01,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:29:01,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:01,004 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:01,005 INFO L82 PathProgramCache]: Analyzing trace with hash 911650778, now seen corresponding path program 1 times [2020-09-25 04:29:01,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:01,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532677650] [2020-09-25 04:29:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:06,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 04:29:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:06,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 04:29:06,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:06,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:29:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:29:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:06,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:06,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:06,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:06,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:06,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:29:06,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:06,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:29:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:06,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:29:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 04:29:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:29:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:06,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532677650] [2020-09-25 04:29:06,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:06,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:06,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092340808] [2020-09-25 04:29:06,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:06,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:06,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:06,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:06,343 INFO L87 Difference]: Start difference. First operand 2726 states and 3280 transitions. Second operand 7 states. [2020-09-25 04:29:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:09,252 INFO L93 Difference]: Finished difference Result 6124 states and 7542 transitions. [2020-09-25 04:29:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:09,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 04:29:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:09,271 INFO L225 Difference]: With dead ends: 6124 [2020-09-25 04:29:09,271 INFO L226 Difference]: Without dead ends: 3081 [2020-09-25 04:29:09,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-09-25 04:29:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2727. [2020-09-25 04:29:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-09-25 04:29:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3160 transitions. [2020-09-25 04:29:09,366 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3160 transitions. Word has length 181 [2020-09-25 04:29:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:09,366 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3160 transitions. [2020-09-25 04:29:09,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3160 transitions. [2020-09-25 04:29:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:29:09,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:09,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:09,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:09,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1324494398, now seen corresponding path program 1 times [2020-09-25 04:29:09,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:09,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583368270] [2020-09-25 04:29:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 04:29:14,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:29:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:14,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:29:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 04:29:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:14,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:14,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:14,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 04:29:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:29:14,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:14,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:29:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:14,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583368270] [2020-09-25 04:29:14,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:14,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:14,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325059840] [2020-09-25 04:29:14,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:14,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:14,733 INFO L87 Difference]: Start difference. First operand 2727 states and 3160 transitions. Second operand 5 states.