/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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:09:05,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:09:05,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:09:05,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:09:05,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:09:05,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:09:05,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:09:05,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:09:05,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:09:05,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:09:05,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:09:05,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:09:05,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:09:05,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:09:05,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:09:05,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:09:05,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:09:05,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:09:05,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:09:05,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:09:05,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:09:05,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:09:05,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:09:05,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:09:05,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:09:05,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:09:05,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:09:05,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:09:05,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:09:05,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:09:05,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:09:05,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:09:05,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:09:05,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:09:05,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:09:05,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:09:05,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:09:05,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:09:05,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:09:05,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:09:05,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:09:05,727 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 05:09:05,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:09:05,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:09:05,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:09:05,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:09:05,782 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:09:05,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:09:05,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:09:05,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:09:05,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:09:05,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:09:05,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:09:05,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:09:05,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:09:05,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:09:05,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:09:05,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:09:05,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:09:05,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:09:05,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:09:05,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:09:05,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:09:05,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:09:05,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:09:05,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:09:05,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:09:05,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:09:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:09:05,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:09:05,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:09:05,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:09:06,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:09:06,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:09:06,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:09:06,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:09:06,242 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:09:06,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-29 05:09:06,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8dc1f3ce/0021858778e64e2ab2759dec2ed6e927/FLAG2046ca417 [2020-10-29 05:09:07,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:09:07,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-29 05:09:07,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8dc1f3ce/0021858778e64e2ab2759dec2ed6e927/FLAG2046ca417 [2020-10-29 05:09:07,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8dc1f3ce/0021858778e64e2ab2759dec2ed6e927 [2020-10-29 05:09:07,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:09:07,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:09:07,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:09:07,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:09:07,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:09:07,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:07" (1/1) ... [2020-10-29 05:09:07,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f6b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:07, skipping insertion in model container [2020-10-29 05:09:07,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:07" (1/1) ... [2020-10-29 05:09:07,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:09:08,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:09:09,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:09:09,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:09:10,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:09:10,365 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:09:10,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10 WrapperNode [2020-10-29 05:09:10,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:09:10,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:09:10,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:09:10,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:09:10,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (1/1) ... [2020-10-29 05:09:10,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:09:10,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:09:10,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:09:10,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:09:10,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (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 05:09:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:09:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:09:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:09:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:09:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:09:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:09:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:09:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:09:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:09:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:09:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:09:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:09:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:09:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:09:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:09:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:09:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:09:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:09:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:09:16,518 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:09:16,521 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:09:16,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:16 BoogieIcfgContainer [2020-10-29 05:09:16,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:09:16,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:09:16,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:09:16,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:09:16,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:09:07" (1/3) ... [2020-10-29 05:09:16,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4d0bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:16, skipping insertion in model container [2020-10-29 05:09:16,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:10" (2/3) ... [2020-10-29 05:09:16,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4d0bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:16, skipping insertion in model container [2020-10-29 05:09:16,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:16" (3/3) ... [2020-10-29 05:09:16,543 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label27.c [2020-10-29 05:09:16,557 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:09:16,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:09:16,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:09:16,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:09:16,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:09:16,625 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:09:16,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:09:16,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:09:16,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:09:16,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:09:16,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:09:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:09:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-29 05:09:16,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:16,727 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] [2020-10-29 05:09:16,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:16,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1679613488, now seen corresponding path program 1 times [2020-10-29 05:09:16,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:16,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240772448] [2020-10-29 05:09:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:17,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:22,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:22,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-29 05:09:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-29 05:09:22,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:22,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:09:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:09:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 800 [2020-10-29 05:09:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:09:23,462 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:09:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:23,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:23,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:09:23,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:23,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:09:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:09:25,076 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 05:09:25,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240772448] [2020-10-29 05:09:25,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:09:25,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:09:25,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513320973] [2020-10-29 05:09:25,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:09:25,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:25,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:09:25,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:09:25,117 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-29 05:09:25,312 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:09:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:36,145 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:09:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:36,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 793 [2020-10-29 05:09:36,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:36,201 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:09:36,202 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:09:36,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:09:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:09:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:09:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-29 05:09:36,428 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 793 [2020-10-29 05:09:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:36,433 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-29 05:09:36,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:09:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-29 05:09:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-29 05:09:36,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:36,470 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] [2020-10-29 05:09:36,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:09:36,472 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:36,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2064407410, now seen corresponding path program 1 times [2020-10-29 05:09:36,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:36,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394495700] [2020-10-29 05:09:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-29 05:09:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:09:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-29 05:09:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:41,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:09:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:09:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:09:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:09:42,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:42,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:42,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:42,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:09:42,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:42,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:42,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:42,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:42,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:42,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:09:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:09:42,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:42,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:09:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:47,068 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 05:09:47,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394495700] [2020-10-29 05:09:47,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:47,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:09:47,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094307586] [2020-10-29 05:09:47,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:09:47,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:47,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:09:47,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:09:47,073 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 5 states. [2020-10-29 05:09:47,350 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:09:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:59,408 INFO L93 Difference]: Finished difference Result 4173 states and 7626 transitions. [2020-10-29 05:09:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:59,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 801 [2020-10-29 05:09:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:59,421 INFO L225 Difference]: With dead ends: 4173 [2020-10-29 05:09:59,421 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:09:59,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:09:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:09:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:09:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2157 transitions. [2020-10-29 05:09:59,486 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2157 transitions. Word has length 801 [2020-10-29 05:09:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:59,487 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2157 transitions. [2020-10-29 05:09:59,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:09:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2157 transitions. [2020-10-29 05:09:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-29 05:09:59,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:59,503 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:09:59,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:09:59,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash -402155817, now seen corresponding path program 1 times [2020-10-29 05:09:59,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:59,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503154713] [2020-10-29 05:09:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:03,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:04,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 826 [2020-10-29 05:10:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-29 05:10:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:05,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:10:05,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:05,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:05,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:05,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:10:05,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:10:05,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:05,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:10:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:10:06,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503154713] [2020-10-29 05:10:06,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:06,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:10:06,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301374752] [2020-10-29 05:10:06,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:10:06,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:06,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:10:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:10:06,020 INFO L87 Difference]: Start difference. First operand 1690 states and 2157 transitions. Second operand 5 states. [2020-10-29 05:10:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:13,836 INFO L93 Difference]: Finished difference Result 5077 states and 6537 transitions. [2020-10-29 05:10:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:10:13,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 808 [2020-10-29 05:10:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:13,858 INFO L225 Difference]: With dead ends: 5077 [2020-10-29 05:10:13,858 INFO L226 Difference]: Without dead ends: 3393 [2020-10-29 05:10:13,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:10:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-29 05:10:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3389. [2020-10-29 05:10:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-29 05:10:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 4037 transitions. [2020-10-29 05:10:13,993 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 4037 transitions. Word has length 808 [2020-10-29 05:10:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:13,997 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 4037 transitions. [2020-10-29 05:10:13,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:10:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 4037 transitions. [2020-10-29 05:10:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-29 05:10:14,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:14,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:14,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:10:14,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:14,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1327517798, now seen corresponding path program 1 times [2020-10-29 05:10:14,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:14,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819924866] [2020-10-29 05:10:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-29 05:10:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:10:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 05:10:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:19,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:10:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:10:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-29 05:10:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:19,681 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:10:19,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:19,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:19,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:19,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:19,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:10:19,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:19,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:10:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:19,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:19,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:19,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:10:19,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:10:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:10:19,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:19,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:10:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:10:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:10:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:10:20,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819924866] [2020-10-29 05:10:20,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:20,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:10:20,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083026619] [2020-10-29 05:10:20,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:10:20,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:20,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:10:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:10:20,534 INFO L87 Difference]: Start difference. First operand 3389 states and 4037 transitions. Second operand 8 states. [2020-10-29 05:10:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:32,247 INFO L93 Difference]: Finished difference Result 8577 states and 10527 transitions. [2020-10-29 05:10:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:10:32,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 813 [2020-10-29 05:10:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:32,275 INFO L225 Difference]: With dead ends: 8577 [2020-10-29 05:10:32,275 INFO L226 Difference]: Without dead ends: 5194 [2020-10-29 05:10:32,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:10:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2020-10-29 05:10:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5165. [2020-10-29 05:10:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5165 states. [2020-10-29 05:10:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 6080 transitions. [2020-10-29 05:10:32,494 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 6080 transitions. Word has length 813 [2020-10-29 05:10:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:32,494 INFO L481 AbstractCegarLoop]: Abstraction has 5165 states and 6080 transitions. [2020-10-29 05:10:32,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:10:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 6080 transitions. [2020-10-29 05:10:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2020-10-29 05:10:32,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:32,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:32,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:10:32,517 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1197282937, now seen corresponding path program 1 times [2020-10-29 05:10:32,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:32,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797412945] [2020-10-29 05:10:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:37,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:37,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 886 [2020-10-29 05:10:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:10:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 05:10:37,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:37,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:37,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:10:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 05:10:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 775 [2020-10-29 05:10:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:38,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:38,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:10:38,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:38,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:10:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:38,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:38,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:10:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 05:10:38,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:38,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:10:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:10:42,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797412945] [2020-10-29 05:10:42,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:42,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:10:42,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044844048] [2020-10-29 05:10:42,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:10:42,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:42,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:10:42,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:10:42,392 INFO L87 Difference]: Start difference. First operand 5165 states and 6080 transitions. Second operand 5 states. [2020-10-29 05:10:42,921 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:10:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:50,237 INFO L93 Difference]: Finished difference Result 11111 states and 13279 transitions. [2020-10-29 05:10:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:10:50,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 866 [2020-10-29 05:10:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:50,271 INFO L225 Difference]: With dead ends: 11111 [2020-10-29 05:10:50,271 INFO L226 Difference]: Without dead ends: 5186 [2020-10-29 05:10:50,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:10:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2020-10-29 05:10:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5165. [2020-10-29 05:10:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5165 states. [2020-10-29 05:10:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 6076 transitions. [2020-10-29 05:10:50,407 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 6076 transitions. Word has length 866 [2020-10-29 05:10:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:50,408 INFO L481 AbstractCegarLoop]: Abstraction has 5165 states and 6076 transitions. [2020-10-29 05:10:50,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:10:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 6076 transitions. [2020-10-29 05:10:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-29 05:10:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:50,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:50,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:10:50,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash 722551856, now seen corresponding path program 1 times [2020-10-29 05:10:50,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:50,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900861969] [2020-10-29 05:10:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:55,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:55,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-29 05:10:55,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:10:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:10:55,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:55,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:10:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:10:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-29 05:10:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:56,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:56,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:10:56,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:10:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:56,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:10:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 05:10:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:10:56,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:10:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 05:10:56,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:56,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:10:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:10:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:10:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 90 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:10:57,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900861969] [2020-10-29 05:10:57,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:57,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:10:57,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773098010] [2020-10-29 05:10:57,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:10:57,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:10:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:10:57,022 INFO L87 Difference]: Start difference. First operand 5165 states and 6076 transitions. Second operand 7 states. [2020-10-29 05:10:57,305 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:10:57,729 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:11:11,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:11,125 INFO L93 Difference]: Finished difference Result 20791 states and 26143 transitions. [2020-10-29 05:11:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:11:11,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 891 [2020-10-29 05:11:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:11,195 INFO L225 Difference]: With dead ends: 20791 [2020-10-29 05:11:11,195 INFO L226 Difference]: Without dead ends: 15632 [2020-10-29 05:11:11,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:11:11,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15632 states. [2020-10-29 05:11:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15632 to 15548. [2020-10-29 05:11:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15548 states. [2020-10-29 05:11:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15548 states to 15548 states and 18444 transitions. [2020-10-29 05:11:11,674 INFO L78 Accepts]: Start accepts. Automaton has 15548 states and 18444 transitions. Word has length 891 [2020-10-29 05:11:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:11,674 INFO L481 AbstractCegarLoop]: Abstraction has 15548 states and 18444 transitions. [2020-10-29 05:11:11,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:11:11,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15548 states and 18444 transitions. [2020-10-29 05:11:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2020-10-29 05:11:11,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:11,736 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:11,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:11:11,737 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 608610419, now seen corresponding path program 1 times [2020-10-29 05:11:11,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:11,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725595545] [2020-10-29 05:11:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 05:11:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:17,182 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:11:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:17,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:17,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:17,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:17,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:11:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:11:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 05:11:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:17,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 05:11:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:17,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:17,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 150 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 05:11:17,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725595545] [2020-10-29 05:11:17,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:17,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:11:17,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302882438] [2020-10-29 05:11:17,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:11:17,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:17,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:11:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:11:17,887 INFO L87 Difference]: Start difference. First operand 15548 states and 18444 transitions. Second operand 8 states. [2020-10-29 05:11:18,144 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:11:18,311 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:11:19,269 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:11:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:35,893 INFO L93 Difference]: Finished difference Result 46547 states and 57278 transitions. [2020-10-29 05:11:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:11:35,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 936 [2020-10-29 05:11:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:36,013 INFO L225 Difference]: With dead ends: 46547 [2020-10-29 05:11:36,014 INFO L226 Difference]: Without dead ends: 31005 [2020-10-29 05:11:36,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:11:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2020-10-29 05:11:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 30925. [2020-10-29 05:11:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30925 states. [2020-10-29 05:11:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30925 states to 30925 states and 34886 transitions. [2020-10-29 05:11:36,821 INFO L78 Accepts]: Start accepts. Automaton has 30925 states and 34886 transitions. Word has length 936 [2020-10-29 05:11:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:36,821 INFO L481 AbstractCegarLoop]: Abstraction has 30925 states and 34886 transitions. [2020-10-29 05:11:36,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:11:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 30925 states and 34886 transitions. [2020-10-29 05:11:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-29 05:11:36,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:36,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:36,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:11:36,943 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:36,944 INFO L82 PathProgramCache]: Analyzing trace with hash -633524846, now seen corresponding path program 1 times [2020-10-29 05:11:36,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:36,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941651992] [2020-10-29 05:11:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:42,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:42,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1099 [2020-10-29 05:11:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:11:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 05:11:42,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:42,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:11:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:11:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 05:11:42,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:42,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:42,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:42,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:42,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:11:42,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:42,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:11:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:42,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:42,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:42,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 05:11:42,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 05:11:42,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:42,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 05:11:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:42,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 05:11:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:42,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:42,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:11:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 05:11:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:42,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:11:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-29 05:11:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:42,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:11:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:11:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:42,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:11:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 275 proven. 118 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 05:11:43,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941651992] [2020-10-29 05:11:43,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:43,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:11:43,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372008989] [2020-10-29 05:11:43,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:11:43,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:43,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:11:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:11:43,566 INFO L87 Difference]: Start difference. First operand 30925 states and 34886 transitions. Second operand 7 states. [2020-10-29 05:11:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:52,433 INFO L93 Difference]: Finished difference Result 62108 states and 70713 transitions. [2020-10-29 05:11:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:11:52,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1077 [2020-10-29 05:11:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:52,539 INFO L225 Difference]: With dead ends: 62108 [2020-10-29 05:11:52,539 INFO L226 Difference]: Without dead ends: 31193 [2020-10-29 05:11:52,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:11:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31193 states. [2020-10-29 05:11:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31193 to 31054. [2020-10-29 05:11:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31054 states. [2020-10-29 05:11:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 34638 transitions. [2020-10-29 05:11:53,278 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 34638 transitions. Word has length 1077 [2020-10-29 05:11:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:53,279 INFO L481 AbstractCegarLoop]: Abstraction has 31054 states and 34638 transitions. [2020-10-29 05:11:53,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:11:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 34638 transitions. [2020-10-29 05:11:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2020-10-29 05:11:53,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:53,368 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:53,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:11:53,368 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash 375213441, now seen corresponding path program 1 times [2020-10-29 05:11:53,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:53,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989027988] [2020-10-29 05:11:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:54,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:58,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1120 [2020-10-29 05:11:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:11:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 05:11:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:58,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:11:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 05:11:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:58,817 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:11:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:58,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:11:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:58,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:11:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:11:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:58,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:11:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:58,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:11:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:58,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:59,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:59,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 05:11:59,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 05:11:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 05:11:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:59,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:11:59,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 05:11:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:59,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:11:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 05:11:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:59,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:11:59,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:11:59,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:59,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:11:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 315 proven. 124 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 05:12:00,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989027988] [2020-10-29 05:12:00,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:00,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:12:00,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189206149] [2020-10-29 05:12:00,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:12:00,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:00,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:12:00,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:12:00,363 INFO L87 Difference]: Start difference. First operand 31054 states and 34638 transitions. Second operand 7 states. [2020-10-29 05:12:00,499 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-29 05:12:01,784 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:12:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:09,428 INFO L93 Difference]: Finished difference Result 85887 states and 96913 transitions. [2020-10-29 05:12:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:12:09,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1096 [2020-10-29 05:12:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:09,606 INFO L225 Difference]: With dead ends: 85887 [2020-10-29 05:12:09,606 INFO L226 Difference]: Without dead ends: 54843 [2020-10-29 05:12:09,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:12:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54843 states. [2020-10-29 05:12:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54843 to 54789. [2020-10-29 05:12:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54789 states. [2020-10-29 05:12:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54789 states to 54789 states and 61131 transitions. [2020-10-29 05:12:11,221 INFO L78 Accepts]: Start accepts. Automaton has 54789 states and 61131 transitions. Word has length 1096 [2020-10-29 05:12:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:11,221 INFO L481 AbstractCegarLoop]: Abstraction has 54789 states and 61131 transitions. [2020-10-29 05:12:11,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:12:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 54789 states and 61131 transitions. [2020-10-29 05:12:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2020-10-29 05:12:11,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:11,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:12:11,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:12:11,477 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:11,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1539923625, now seen corresponding path program 1 times [2020-10-29 05:12:11,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:11,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371854916] [2020-10-29 05:12:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1236 [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:12:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-29 05:12:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-29 05:12:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:16,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:16,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 05:12:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:17,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:17,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:12:17,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 05:12:17,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:17,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:12:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-29 05:12:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-29 05:12:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-29 05:12:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:12:17,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 599 proven. 19 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 05:12:18,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371854916] [2020-10-29 05:12:18,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:18,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:12:18,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961285358] [2020-10-29 05:12:18,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:12:18,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:12:18,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:12:18,764 INFO L87 Difference]: Start difference. First operand 54789 states and 61131 transitions. Second operand 7 states. [2020-10-29 05:12:19,736 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:12:20,003 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:12:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:30,474 INFO L93 Difference]: Finished difference Result 141490 states and 163515 transitions. [2020-10-29 05:12:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:12:30,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1212 [2020-10-29 05:12:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:30,781 INFO L225 Difference]: With dead ends: 141490 [2020-10-29 05:12:30,781 INFO L226 Difference]: Without dead ends: 86690 [2020-10-29 05:12:30,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:12:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86690 states. [2020-10-29 05:12:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86690 to 81808. [2020-10-29 05:12:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81808 states. [2020-10-29 05:12:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81808 states to 81808 states and 90083 transitions. [2020-10-29 05:12:33,063 INFO L78 Accepts]: Start accepts. Automaton has 81808 states and 90083 transitions. Word has length 1212 [2020-10-29 05:12:33,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:33,064 INFO L481 AbstractCegarLoop]: Abstraction has 81808 states and 90083 transitions. [2020-10-29 05:12:33,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:12:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 81808 states and 90083 transitions. [2020-10-29 05:12:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2020-10-29 05:12:33,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:33,208 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-29 05:12:33,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:12:33,209 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -794496289, now seen corresponding path program 1 times [2020-10-29 05:12:33,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:33,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015215781] [2020-10-29 05:12:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking...