/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:16:00,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:16:00,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:16:00,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:16:00,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:16:00,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:16:00,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:16:00,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:16:00,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:16:00,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:16:00,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:16:00,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:16:00,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:16:00,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:16:00,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:16:00,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:16:00,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:16:00,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:16:00,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:16:00,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:16:00,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:16:00,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:16:00,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:16:00,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:16:00,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:16:00,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:16:00,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:16:00,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:16:00,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:16:00,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:16:00,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:16:00,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:16:00,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:16:00,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:16:00,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:16:00,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:16:00,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:16:00,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:16:00,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:16:00,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:16:00,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:16:00,732 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 [2020-10-29 05:16:00,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:16:00,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:16:00,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:16:00,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:16:00,797 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:16:00,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:16:00,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:16:00,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:16:00,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:16:00,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:16:00,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:16:00,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:16:00,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:16:00,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:16:00,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:16:00,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:16:00,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:16:00,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:16:00,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:16:00,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:16:00,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:16:00,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:16:00,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:16:00,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:16:00,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:16:00,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:16:00,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:16:00,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:16:00,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:16:00,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:16:01,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:16:01,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:16:01,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:16:01,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:16:01,323 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:16:01,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label54.c [2020-10-29 05:16:01,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e24c1dbc/4ee5e85c64cd4772b4114e04701aa326/FLAGab5a5627d [2020-10-29 05:16:02,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:16:02,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label54.c [2020-10-29 05:16:02,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e24c1dbc/4ee5e85c64cd4772b4114e04701aa326/FLAGab5a5627d [2020-10-29 05:16:02,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e24c1dbc/4ee5e85c64cd4772b4114e04701aa326 [2020-10-29 05:16:02,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:16:02,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:16:02,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:16:02,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:16:02,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:16:02,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:16:02" (1/1) ... [2020-10-29 05:16:02,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:02, skipping insertion in model container [2020-10-29 05:16:02,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:16:02" (1/1) ... [2020-10-29 05:16:02,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:16:03,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:16:04,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:16:04,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:16:05,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:16:05,508 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:16:05,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05 WrapperNode [2020-10-29 05:16:05,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:16:05,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:16:05,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:16:05,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:16:05,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (1/1) ... [2020-10-29 05:16:05,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:16:05,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:16:05,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:16:05,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:16:05,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (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 [2020-10-29 05:16:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:16:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:16:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:16:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:16:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:16:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:16:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:16:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:16:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:16:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:16:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:16:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:16:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:16:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:16:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:16:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:16:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:16:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:16:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:16:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:16:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:16:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:16:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:16:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:16:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:16:11,517 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:16:11,517 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:16:11,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:11 BoogieIcfgContainer [2020-10-29 05:16:11,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:16:11,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:16:11,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:16:11,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:16:11,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:16:02" (1/3) ... [2020-10-29 05:16:11,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ed313e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:16:11, skipping insertion in model container [2020-10-29 05:16:11,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:05" (2/3) ... [2020-10-29 05:16:11,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ed313e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:16:11, skipping insertion in model container [2020-10-29 05:16:11,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:11" (3/3) ... [2020-10-29 05:16:11,536 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label54.c [2020-10-29 05:16:11,549 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:16:11,555 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:16:11,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:16:11,612 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:16:11,612 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:16:11,612 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:16:11,612 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:16:11,613 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:16:11,613 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:16:11,613 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:16:11,613 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:16:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:16:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-29 05:16:11,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:11,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:16:11,706 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:11,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1720178832, now seen corresponding path program 1 times [2020-10-29 05:16:11,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:11,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711200308] [2020-10-29 05:16:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:17,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:17,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-29 05:16:17,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:16:17,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 05:16:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:17,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:16:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:16:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 824 [2020-10-29 05:16:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:16:18,693 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:16:18,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:18,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:18,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:18,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:18,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:16:18,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:18,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:16:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:16:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:16:20,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711200308] [2020-10-29 05:16:20,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:16:20,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:16:20,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800633895] [2020-10-29 05:16:20,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:16:20,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:20,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:16:20,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:16:20,155 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-29 05:16:20,402 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:16:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:29,920 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:16:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:16:29,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 817 [2020-10-29 05:16:29,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:29,974 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:16:29,974 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:16:29,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:16:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:16:30,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:16:30,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:16:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-29 05:16:30,191 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 817 [2020-10-29 05:16:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:30,196 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-29 05:16:30,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:16:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-29 05:16:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-29 05:16:30,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:30,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:16:30,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:16:30,233 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:30,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:30,234 INFO L82 PathProgramCache]: Analyzing trace with hash -894901010, now seen corresponding path program 1 times [2020-10-29 05:16:30,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:30,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032544309] [2020-10-29 05:16:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:31,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:35,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:35,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-29 05:16:35,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:35,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-29 05:16:35,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:35,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:16:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 821 [2020-10-29 05:16:35,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:36,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:36,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:36,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:16:36,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:36,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:36,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:36,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:16:36,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:16:36,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:36,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:16:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:16:36,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032544309] [2020-10-29 05:16:36,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:36,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:16:36,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93385963] [2020-10-29 05:16:36,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:16:36,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:36,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:16:36,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:16:36,969 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-29 05:16:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:47,685 INFO L93 Difference]: Finished difference Result 5077 states and 9085 transitions. [2020-10-29 05:16:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:16:47,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 825 [2020-10-29 05:16:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:47,708 INFO L225 Difference]: With dead ends: 5077 [2020-10-29 05:16:47,708 INFO L226 Difference]: Without dead ends: 3393 [2020-10-29 05:16:47,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:16:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-29 05:16:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3389. [2020-10-29 05:16:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-29 05:16:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5057 transitions. [2020-10-29 05:16:47,829 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5057 transitions. Word has length 825 [2020-10-29 05:16:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:47,831 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 5057 transitions. [2020-10-29 05:16:47,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:16:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5057 transitions. [2020-10-29 05:16:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2020-10-29 05:16:47,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:47,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:16:47,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:16:47,870 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:47,871 INFO L82 PathProgramCache]: Analyzing trace with hash 640056151, now seen corresponding path program 1 times [2020-10-29 05:16:47,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:47,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802087071] [2020-10-29 05:16:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:52,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 866 [2020-10-29 05:16:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:16:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 05:16:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:52,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:16:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:16:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-29 05:16:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:56,249 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 36 [2020-10-29 05:16:56,392 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-29 05:16:56,568 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-29 05:16:56,714 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-29 05:16:56,896 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-10-29 05:16:57,049 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-10-29 05:16:57,259 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 36 [2020-10-29 05:16:57,491 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 39 [2020-10-29 05:16:57,660 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 [2020-10-29 05:16:57,871 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-29 05:16:58,126 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 40 [2020-10-29 05:16:58,412 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 44 [2020-10-29 05:16:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:16:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:58,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:58,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:58,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:16:58,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:16:58,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:58,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:16:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:17:03,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802087071] [2020-10-29 05:17:03,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:03,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:17:03,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518429074] [2020-10-29 05:17:03,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:17:03,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:03,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:17:03,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:17:03,674 INFO L87 Difference]: Start difference. First operand 3389 states and 5057 transitions. Second operand 17 states. [2020-10-29 05:17:04,109 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:17:04,323 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:17:05,997 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:17:08,759 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 05:17:08,942 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:17:10,662 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2020-10-29 05:17:11,203 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-29 05:17:12,730 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 123 [2020-10-29 05:17:14,616 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:17:14,863 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:17:15,767 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2020-10-29 05:17:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:18,519 INFO L93 Difference]: Finished difference Result 7285 states and 11152 transitions. [2020-10-29 05:17:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:17:18,527 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 848 [2020-10-29 05:17:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:18,550 INFO L225 Difference]: With dead ends: 7285 [2020-10-29 05:17:18,550 INFO L226 Difference]: Without dead ends: 3902 [2020-10-29 05:17:18,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:17:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2020-10-29 05:17:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3898. [2020-10-29 05:17:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3898 states. [2020-10-29 05:17:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5577 transitions. [2020-10-29 05:17:18,674 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5577 transitions. Word has length 848 [2020-10-29 05:17:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:18,675 INFO L481 AbstractCegarLoop]: Abstraction has 3898 states and 5577 transitions. [2020-10-29 05:17:18,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:17:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5577 transitions. [2020-10-29 05:17:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2020-10-29 05:17:18,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:18,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:17:18,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:17:18,695 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1237259019, now seen corresponding path program 1 times [2020-10-29 05:17:18,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:18,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617005898] [2020-10-29 05:17:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:23,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-29 05:17:23,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 05:17:23,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:23,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:17:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 05:17:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 821 [2020-10-29 05:17:23,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:17:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:24,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:24,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:24,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:24,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:24,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:24,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:17:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:17:25,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617005898] [2020-10-29 05:17:25,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:25,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:17:25,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036452682] [2020-10-29 05:17:25,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:17:25,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:25,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:17:25,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:17:25,277 INFO L87 Difference]: Start difference. First operand 3898 states and 5577 transitions. Second operand 5 states. [2020-10-29 05:17:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:36,686 INFO L93 Difference]: Finished difference Result 11171 states and 16347 transitions. [2020-10-29 05:17:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:36,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 890 [2020-10-29 05:17:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:36,730 INFO L225 Difference]: With dead ends: 11171 [2020-10-29 05:17:36,730 INFO L226 Difference]: Without dead ends: 7279 [2020-10-29 05:17:36,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2020-10-29 05:17:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 7275. [2020-10-29 05:17:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7275 states. [2020-10-29 05:17:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7275 states to 7275 states and 9636 transitions. [2020-10-29 05:17:36,933 INFO L78 Accepts]: Start accepts. Automaton has 7275 states and 9636 transitions. Word has length 890 [2020-10-29 05:17:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:36,935 INFO L481 AbstractCegarLoop]: Abstraction has 7275 states and 9636 transitions. [2020-10-29 05:17:36,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:17:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7275 states and 9636 transitions. [2020-10-29 05:17:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-29 05:17:36,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:36,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:17:36,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:17:36,964 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash 904255322, now seen corresponding path program 1 times [2020-10-29 05:17:36,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:36,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804361891] [2020-10-29 05:17:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:42,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:42,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 913 [2020-10-29 05:17:42,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 05:17:42,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:42,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:17:42,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:17:42,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 821 [2020-10-29 05:17:42,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 05:17:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:42,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:42,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:42,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:17:42,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 05:17:42,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:42,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:17:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:17:43,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804361891] [2020-10-29 05:17:43,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:43,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:17:43,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181124576] [2020-10-29 05:17:43,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:17:43,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:43,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:17:43,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:43,690 INFO L87 Difference]: Start difference. First operand 7275 states and 9636 transitions. Second operand 6 states. [2020-10-29 05:17:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:55,765 INFO L93 Difference]: Finished difference Result 17923 states and 24605 transitions. [2020-10-29 05:17:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:55,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 895 [2020-10-29 05:17:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:55,813 INFO L225 Difference]: With dead ends: 17923 [2020-10-29 05:17:55,813 INFO L226 Difference]: Without dead ends: 10654 [2020-10-29 05:17:55,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:17:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2020-10-29 05:17:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 10646. [2020-10-29 05:17:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10646 states. [2020-10-29 05:17:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 14291 transitions. [2020-10-29 05:17:56,106 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 14291 transitions. Word has length 895 [2020-10-29 05:17:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:56,107 INFO L481 AbstractCegarLoop]: Abstraction has 10646 states and 14291 transitions. [2020-10-29 05:17:56,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:17:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 14291 transitions. [2020-10-29 05:17:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2020-10-29 05:17:56,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:56,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:17:56,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:17:56,150 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:56,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 478477959, now seen corresponding path program 1 times [2020-10-29 05:17:56,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:56,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230654516] [2020-10-29 05:17:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 954 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 05:18:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 821 [2020-10-29 05:18:01,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 05:18:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 05:18:01,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:01,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 05:18:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 115 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:02,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230654516] [2020-10-29 05:18:02,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:02,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:18:02,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545261006] [2020-10-29 05:18:02,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:18:02,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:02,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:18:02,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:18:02,892 INFO L87 Difference]: Start difference. First operand 10646 states and 14291 transitions. Second operand 7 states. [2020-10-29 05:18:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:19,347 INFO L93 Difference]: Finished difference Result 40684 states and 56452 transitions. [2020-10-29 05:18:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:18:19,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 936 [2020-10-29 05:18:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:19,468 INFO L225 Difference]: With dead ends: 40684 [2020-10-29 05:18:19,468 INFO L226 Difference]: Without dead ends: 30044 [2020-10-29 05:18:19,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:18:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30044 states. [2020-10-29 05:18:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30044 to 30036. [2020-10-29 05:18:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30036 states. [2020-10-29 05:18:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30036 states to 30036 states and 39795 transitions. [2020-10-29 05:18:20,387 INFO L78 Accepts]: Start accepts. Automaton has 30036 states and 39795 transitions. Word has length 936 [2020-10-29 05:18:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:20,388 INFO L481 AbstractCegarLoop]: Abstraction has 30036 states and 39795 transitions. [2020-10-29 05:18:20,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:18:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 30036 states and 39795 transitions. [2020-10-29 05:18:20,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-29 05:18:20,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:20,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:18:20,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:18:20,494 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:20,495 INFO L82 PathProgramCache]: Analyzing trace with hash -678236566, now seen corresponding path program 1 times [2020-10-29 05:18:20,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:20,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213822976] [2020-10-29 05:18:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-29 05:18:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:18:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:18:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:25,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:18:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-29 05:18:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 821 [2020-10-29 05:18:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:26,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:26,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 05:18:26,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 05:18:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:26,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 05:18:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 146 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:27,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213822976] [2020-10-29 05:18:27,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:27,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:18:27,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200654269] [2020-10-29 05:18:27,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:18:27,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:27,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:18:27,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:18:27,137 INFO L87 Difference]: Start difference. First operand 30036 states and 39795 transitions. Second operand 6 states. [2020-10-29 05:18:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:40,543 INFO L93 Difference]: Finished difference Result 75224 states and 103527 transitions. [2020-10-29 05:18:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:18:40,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 967 [2020-10-29 05:18:40,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:40,697 INFO L225 Difference]: With dead ends: 75224 [2020-10-29 05:18:40,697 INFO L226 Difference]: Without dead ends: 45194 [2020-10-29 05:18:40,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:18:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45194 states. [2020-10-29 05:18:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45194 to 43518. [2020-10-29 05:18:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43518 states. [2020-10-29 05:18:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43518 states to 43518 states and 56861 transitions. [2020-10-29 05:18:41,939 INFO L78 Accepts]: Start accepts. Automaton has 43518 states and 56861 transitions. Word has length 967 [2020-10-29 05:18:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:41,940 INFO L481 AbstractCegarLoop]: Abstraction has 43518 states and 56861 transitions. [2020-10-29 05:18:41,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:18:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 43518 states and 56861 transitions. [2020-10-29 05:18:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-29 05:18:42,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:42,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:18:42,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:18:42,044 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:42,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:42,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1755402903, now seen corresponding path program 1 times [2020-10-29 05:18:42,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:42,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215209980] [2020-10-29 05:18:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:47,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:47,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-29 05:18:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-29 05:18:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:49,278 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-29 05:18:49,464 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-29 05:18:49,720 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2020-10-29 05:18:49,957 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 46 [2020-10-29 05:18:50,184 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 42 [2020-10-29 05:18:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:50,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:50,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:50,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:18:50,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:50,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:50,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 05:18:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 05:18:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:50,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 05:18:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:57,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215209980] [2020-10-29 05:18:57,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:57,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:18:57,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184465917] [2020-10-29 05:18:57,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:18:57,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:18:57,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:18:57,807 INFO L87 Difference]: Start difference. First operand 43518 states and 56861 transitions. Second operand 17 states. [2020-10-29 05:19:01,995 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:19:02,200 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:19:07,583 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:19:10,415 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:19:10,623 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:19:18,177 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2020-10-29 05:19:19,547 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 125 [2020-10-29 05:19:20,062 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 140 [2020-10-29 05:19:22,448 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 136 [2020-10-29 05:19:25,789 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 133 [2020-10-29 05:19:28,212 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-29 05:19:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:28,590 INFO L93 Difference]: Finished difference Result 87688 states and 115282 transitions. [2020-10-29 05:19:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:19:28,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1008 [2020-10-29 05:19:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:28,735 INFO L225 Difference]: With dead ends: 87688 [2020-10-29 05:19:28,735 INFO L226 Difference]: Without dead ends: 44176 [2020-10-29 05:19:28,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:19:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44176 states. [2020-10-29 05:19:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44176 to 44168. [2020-10-29 05:19:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44168 states. [2020-10-29 05:19:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44168 states to 44168 states and 57544 transitions. [2020-10-29 05:19:29,687 INFO L78 Accepts]: Start accepts. Automaton has 44168 states and 57544 transitions. Word has length 1008 [2020-10-29 05:19:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:29,688 INFO L481 AbstractCegarLoop]: Abstraction has 44168 states and 57544 transitions. [2020-10-29 05:19:29,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:19:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 44168 states and 57544 transitions. [2020-10-29 05:19:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-29 05:19:29,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:29,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:19:29,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:19:29,777 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:29,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:29,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1387441952, now seen corresponding path program 1 times [2020-10-29 05:19:29,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:29,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951751221] [2020-10-29 05:19:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:34,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:34,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1145 [2020-10-29 05:19:34,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:19:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 05:19:34,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:34,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:19:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 05:19:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-29 05:19:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:35,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:35,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:35,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...