/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/Problem03_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:51:57,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:51:57,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:51:57,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:51:57,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:51:57,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:51:57,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:51:57,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:51:57,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:51:57,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:51:57,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:51:57,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:51:57,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:51:57,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:51:57,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:51:57,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:51:57,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:51:57,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:51:57,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:51:57,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:51:57,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:51:57,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:51:57,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:51:57,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:51:57,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:51:57,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:51:57,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:51:57,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:51:57,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:51:57,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:51:57,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:51:57,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:51:57,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:51:57,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:51:57,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:51:57,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:51:57,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:51:57,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:51:57,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:51:57,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:51:57,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:51:57,825 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 04:51:57,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:51:57,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:51:57,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:51:57,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:51:57,882 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:51:57,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:51:57,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:51:57,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:51:57,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:51:57,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:51:57,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:51:57,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:51:57,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:51:57,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:51:57,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:51:57,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:51:57,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:51:57,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:51:57,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:51:57,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:51:57,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:51:57,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:57,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:51:57,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:51:57,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:51:57,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:51:57,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:51:57,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:51:57,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:51:57,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:51:58,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:51:58,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:51:58,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:51:58,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:51:58,384 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:51:58,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12.c [2020-10-29 04:51:58,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9b1e70ad/f0fcf907dc54444e91acebefaa450ba9/FLAGb4062c0fe [2020-10-29 04:51:59,413 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:51:59,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label12.c [2020-10-29 04:51:59,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9b1e70ad/f0fcf907dc54444e91acebefaa450ba9/FLAGb4062c0fe [2020-10-29 04:51:59,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9b1e70ad/f0fcf907dc54444e91acebefaa450ba9 [2020-10-29 04:51:59,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:51:59,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:51:59,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:59,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:51:59,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:51:59,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:59" (1/1) ... [2020-10-29 04:51:59,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd021e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:59, skipping insertion in model container [2020-10-29 04:51:59,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:59" (1/1) ... [2020-10-29 04:51:59,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:51:59,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:52:00,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:52:00,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:52:00,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:52:00,932 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:52:00,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00 WrapperNode [2020-10-29 04:52:00,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:52:00,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:52:00,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:52:00,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:52:00,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:00,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:01,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:01,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:01,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:01,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:01,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:01,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:52:01,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:52:01,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:52:01,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:52:01,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (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 04:52:01,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:52:01,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:52:01,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:52:01,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:52:01,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:52:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:52:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:52:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:52:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:52:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:52:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:52:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:52:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:52:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:52:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:52:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:52:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:52:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:52:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:52:03,946 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:52:03,946 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:52:03,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:03 BoogieIcfgContainer [2020-10-29 04:52:03,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:52:03,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:52:03,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:52:03,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:52:03,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:51:59" (1/3) ... [2020-10-29 04:52:03,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6979cda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:52:03, skipping insertion in model container [2020-10-29 04:52:03,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00" (2/3) ... [2020-10-29 04:52:03,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6979cda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:52:03, skipping insertion in model container [2020-10-29 04:52:03,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:03" (3/3) ... [2020-10-29 04:52:03,959 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label12.c [2020-10-29 04:52:03,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:52:03,978 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:52:03,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:52:04,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:52:04,022 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:52:04,022 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:52:04,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:52:04,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:52:04,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:52:04,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:52:04,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:52:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:52:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 04:52:04,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:04,065 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] [2020-10-29 04:52:04,066 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1754186376, now seen corresponding path program 1 times [2020-10-29 04:52:04,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:04,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073342597] [2020-10-29 04:52:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:09,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:09,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 04:52:09,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:52:09,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:09,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:52:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 04:52:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:52:10,313 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:10,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 04:52:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:10,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:52:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:10,543 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 04:52:10,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073342597] [2020-10-29 04:52:10,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:52:10,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:52:10,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408456398] [2020-10-29 04:52:10,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:52:10,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:52:10,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:52:10,570 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:52:11,021 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:15,588 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:52:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:15,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-29 04:52:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:15,626 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:52:15,627 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:52:15,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:52:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:52:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:52:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:52:15,796 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 170 [2020-10-29 04:52:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:15,797 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:52:15,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:52:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:52:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 04:52:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:15,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:15,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:52:15,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:15,807 INFO L82 PathProgramCache]: Analyzing trace with hash 114532969, now seen corresponding path program 1 times [2020-10-29 04:52:15,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:15,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466553036] [2020-10-29 04:52:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:18,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 04:52:18,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2251 [2020-10-29 04:52:18,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:18,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:52:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 04:52:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:18,655 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:18,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:18,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:18,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:52:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:18,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:52:18,841 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:18,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:18,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:18,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:52:18,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:18,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:52:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:18,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466553036] [2020-10-29 04:52:18,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:18,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:18,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651997890] [2020-10-29 04:52:18,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:18,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:18,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:18,959 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-29 04:52:19,541 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:24,118 INFO L93 Difference]: Finished difference Result 1384 states and 2149 transitions. [2020-10-29 04:52:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:24,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-29 04:52:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:24,131 INFO L225 Difference]: With dead ends: 1384 [2020-10-29 04:52:24,132 INFO L226 Difference]: Without dead ends: 914 [2020-10-29 04:52:24,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2020-10-29 04:52:24,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 903. [2020-10-29 04:52:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-29 04:52:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1331 transitions. [2020-10-29 04:52:24,227 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1331 transitions. Word has length 179 [2020-10-29 04:52:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:24,229 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1331 transitions. [2020-10-29 04:52:24,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1331 transitions. [2020-10-29 04:52:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 04:52:24,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:24,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:24,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:52:24,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:24,242 INFO L82 PathProgramCache]: Analyzing trace with hash -545512683, now seen corresponding path program 1 times [2020-10-29 04:52:24,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:24,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247990104] [2020-10-29 04:52:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:29,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:29,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 04:52:29,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:52:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 04:52:29,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:29,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:52:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 04:52:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:52:29,934 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:29,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:29,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:29,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:29,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:52:29,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:29,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:30,112 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:30,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:30,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:30,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:30,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:30,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:52:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:30,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:52:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:52:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:30,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:52:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:52:30,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247990104] [2020-10-29 04:52:30,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:30,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:30,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910194191] [2020-10-29 04:52:30,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:30,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:30,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:30,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:30,316 INFO L87 Difference]: Start difference. First operand 903 states and 1331 transitions. Second operand 5 states. [2020-10-29 04:52:31,125 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:35,052 INFO L93 Difference]: Finished difference Result 2646 states and 3932 transitions. [2020-10-29 04:52:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:35,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-29 04:52:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:35,066 INFO L225 Difference]: With dead ends: 2646 [2020-10-29 04:52:35,066 INFO L226 Difference]: Without dead ends: 906 [2020-10-29 04:52:35,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-29 04:52:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 902. [2020-10-29 04:52:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-29 04:52:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1329 transitions. [2020-10-29 04:52:35,125 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1329 transitions. Word has length 189 [2020-10-29 04:52:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:35,126 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1329 transitions. [2020-10-29 04:52:35,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1329 transitions. [2020-10-29 04:52:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 04:52:35,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:35,132 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:52:35,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:52:35,132 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1687857941, now seen corresponding path program 1 times [2020-10-29 04:52:35,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:35,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589215032] [2020-10-29 04:52:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 04:52:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2061 [2020-10-29 04:52:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:52:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 04:52:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,803 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:37,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:37,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:37,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,983 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:37,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:38,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:52:38,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:52:38,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:38,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:52:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:38,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589215032] [2020-10-29 04:52:38,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:38,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:38,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694787282] [2020-10-29 04:52:38,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:38,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:38,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:38,164 INFO L87 Difference]: Start difference. First operand 902 states and 1329 transitions. Second operand 5 states. [2020-10-29 04:52:38,806 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:42,924 INFO L93 Difference]: Finished difference Result 2642 states and 3959 transitions. [2020-10-29 04:52:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:42,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-29 04:52:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:42,938 INFO L225 Difference]: With dead ends: 2642 [2020-10-29 04:52:42,939 INFO L226 Difference]: Without dead ends: 1746 [2020-10-29 04:52:42,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-29 04:52:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1739. [2020-10-29 04:52:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1739 states. [2020-10-29 04:52:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2534 transitions. [2020-10-29 04:52:43,022 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2534 transitions. Word has length 189 [2020-10-29 04:52:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:43,023 INFO L481 AbstractCegarLoop]: Abstraction has 1739 states and 2534 transitions. [2020-10-29 04:52:43,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2534 transitions. [2020-10-29 04:52:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 04:52:43,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:43,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:52:43,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:52:43,034 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:43,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1184780900, now seen corresponding path program 1 times [2020-10-29 04:52:43,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:43,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73624649] [2020-10-29 04:52:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:43,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:48,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:48,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 04:52:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:52:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:48,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 04:52:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 04:52:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:48,777 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:48,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:52:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:48,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:48,989 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:52:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:49,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:52:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:49,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:49,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:52:49,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 04:52:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:49,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:52:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:52:49,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73624649] [2020-10-29 04:52:49,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:49,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:49,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115232941] [2020-10-29 04:52:49,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:49,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:49,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:49,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:49,200 INFO L87 Difference]: Start difference. First operand 1739 states and 2534 transitions. Second operand 5 states. [2020-10-29 04:52:49,735 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:54,568 INFO L93 Difference]: Finished difference Result 5173 states and 7716 transitions. [2020-10-29 04:52:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:54,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-29 04:52:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:54,596 INFO L225 Difference]: With dead ends: 5173 [2020-10-29 04:52:54,596 INFO L226 Difference]: Without dead ends: 3440 [2020-10-29 04:52:54,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2020-10-29 04:52:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3416. [2020-10-29 04:52:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3416 states. [2020-10-29 04:52:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 5045 transitions. [2020-10-29 04:52:54,740 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 5045 transitions. Word has length 202 [2020-10-29 04:52:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:54,740 INFO L481 AbstractCegarLoop]: Abstraction has 3416 states and 5045 transitions. [2020-10-29 04:52:54,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 5045 transitions. [2020-10-29 04:52:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 04:52:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:54,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:52:54,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:52:54,755 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash -939646624, now seen corresponding path program 1 times [2020-10-29 04:52:54,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:54,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637462653] [2020-10-29 04:52:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:59,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:59,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 04:52:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 04:52:59,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:00,336 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:00,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:00,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:00,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:00,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:53:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:00,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:00,511 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:00,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:00,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:53:00,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:00,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:53:00,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:00,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:00,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:00,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:53:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:53:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 04:53:00,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:00,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:53:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:53:00,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637462653] [2020-10-29 04:53:00,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:00,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:00,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623392638] [2020-10-29 04:53:00,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:00,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:00,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:00,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:00,705 INFO L87 Difference]: Start difference. First operand 3416 states and 5045 transitions. Second operand 5 states. [2020-10-29 04:53:01,171 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:53:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:05,319 INFO L93 Difference]: Finished difference Result 8510 states and 12862 transitions. [2020-10-29 04:53:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:05,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-29 04:53:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:05,358 INFO L225 Difference]: With dead ends: 8510 [2020-10-29 04:53:05,358 INFO L226 Difference]: Without dead ends: 5100 [2020-10-29 04:53:05,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2020-10-29 04:53:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 5094. [2020-10-29 04:53:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5094 states. [2020-10-29 04:53:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 7506 transitions. [2020-10-29 04:53:05,568 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 7506 transitions. Word has length 216 [2020-10-29 04:53:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:05,568 INFO L481 AbstractCegarLoop]: Abstraction has 5094 states and 7506 transitions. [2020-10-29 04:53:05,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 7506 transitions. [2020-10-29 04:53:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 04:53:05,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:05,587 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:05,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:53:05,588 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1300124805, now seen corresponding path program 1 times [2020-10-29 04:53:05,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:05,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305580508] [2020-10-29 04:53:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 04:53:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3570 [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 04:53:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,730 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:09,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:53:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,905 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:09,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:53:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:53:09,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:53:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:53:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:53:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 04:53:10,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305580508] [2020-10-29 04:53:10,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:10,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:10,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293613750] [2020-10-29 04:53:10,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:10,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:10,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:10,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:10,187 INFO L87 Difference]: Start difference. First operand 5094 states and 7506 transitions. Second operand 5 states. [2020-10-29 04:53:10,802 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:53:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:15,550 INFO L93 Difference]: Finished difference Result 14583 states and 22253 transitions. [2020-10-29 04:53:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:15,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-29 04:53:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:15,610 INFO L225 Difference]: With dead ends: 14583 [2020-10-29 04:53:15,610 INFO L226 Difference]: Without dead ends: 9495 [2020-10-29 04:53:15,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9495 states. [2020-10-29 04:53:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9495 to 9488. [2020-10-29 04:53:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9488 states. [2020-10-29 04:53:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9488 states to 9488 states and 13999 transitions. [2020-10-29 04:53:15,976 INFO L78 Accepts]: Start accepts. Automaton has 9488 states and 13999 transitions. Word has length 221 [2020-10-29 04:53:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:15,977 INFO L481 AbstractCegarLoop]: Abstraction has 9488 states and 13999 transitions. [2020-10-29 04:53:15,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 9488 states and 13999 transitions. [2020-10-29 04:53:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 04:53:16,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:16,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:16,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:53:16,014 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1164119313, now seen corresponding path program 1 times [2020-10-29 04:53:16,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:16,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789478326] [2020-10-29 04:53:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:16,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:18,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 04:53:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2140 [2020-10-29 04:53:18,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:18,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 04:53:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 04:53:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:18,694 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:18,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:18,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:18,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:18,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:18,877 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:18,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:19,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:19,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 04:53:19,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 04:53:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:53:19,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789478326] [2020-10-29 04:53:19,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:19,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:19,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775575651] [2020-10-29 04:53:19,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:19,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:19,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:19,140 INFO L87 Difference]: Start difference. First operand 9488 states and 13999 transitions. Second operand 5 states. [2020-10-29 04:53:19,714 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:24,558 INFO L93 Difference]: Finished difference Result 26730 states and 40432 transitions. [2020-10-29 04:53:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:24,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-29 04:53:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:24,687 INFO L225 Difference]: With dead ends: 26730 [2020-10-29 04:53:24,687 INFO L226 Difference]: Without dead ends: 17248 [2020-10-29 04:53:24,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2020-10-29 04:53:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 17221. [2020-10-29 04:53:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17221 states. [2020-10-29 04:53:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17221 states to 17221 states and 25779 transitions. [2020-10-29 04:53:25,449 INFO L78 Accepts]: Start accepts. Automaton has 17221 states and 25779 transitions. Word has length 233 [2020-10-29 04:53:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:25,450 INFO L481 AbstractCegarLoop]: Abstraction has 17221 states and 25779 transitions. [2020-10-29 04:53:25,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 17221 states and 25779 transitions. [2020-10-29 04:53:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 04:53:25,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:25,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:53:25,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:53:25,515 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:25,516 INFO L82 PathProgramCache]: Analyzing trace with hash 32080030, now seen corresponding path program 1 times [2020-10-29 04:53:25,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:25,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321839530] [2020-10-29 04:53:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:28,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:53:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3270 [2020-10-29 04:53:28,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:28,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:53:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:53:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:29,286 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:29,450 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:53:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:53:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:53:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 04:53:29,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:53:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:53:29,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321839530] [2020-10-29 04:53:29,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:29,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:29,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614089565] [2020-10-29 04:53:29,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:29,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:29,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:29,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:29,913 INFO L87 Difference]: Start difference. First operand 17221 states and 25779 transitions. Second operand 7 states. [2020-10-29 04:53:30,596 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:31,064 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:53:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:39,655 INFO L93 Difference]: Finished difference Result 65202 states and 111811 transitions. [2020-10-29 04:53:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:39,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-29 04:53:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:40,118 INFO L225 Difference]: With dead ends: 65202 [2020-10-29 04:53:40,119 INFO L226 Difference]: Without dead ends: 47987 [2020-10-29 04:53:40,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47987 states. [2020-10-29 04:53:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47987 to 47149. [2020-10-29 04:53:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47149 states. [2020-10-29 04:53:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47149 states to 47149 states and 73057 transitions. [2020-10-29 04:53:43,513 INFO L78 Accepts]: Start accepts. Automaton has 47149 states and 73057 transitions. Word has length 237 [2020-10-29 04:53:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:43,514 INFO L481 AbstractCegarLoop]: Abstraction has 47149 states and 73057 transitions. [2020-10-29 04:53:43,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 47149 states and 73057 transitions. [2020-10-29 04:53:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 04:53:43,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:43,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:53:43,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:53:43,744 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:43,744 INFO L82 PathProgramCache]: Analyzing trace with hash 511699404, now seen corresponding path program 1 times [2020-10-29 04:53:43,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:43,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125086517] [2020-10-29 04:53:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:46,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:47,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:47,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3689 [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:53:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 04:53:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,173 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:53:48,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:53:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,395 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:53:48,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:53:48,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:53:48,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:53:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:53:48,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:53:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:49,053 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-10-29 04:53:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 5 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:53:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125086517] [2020-10-29 04:53:49,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:49,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:53:49,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751980758] [2020-10-29 04:53:49,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:53:49,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:53:49,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:53:49,414 INFO L87 Difference]: Start difference. First operand 47149 states and 73057 transitions. Second operand 9 states. [2020-10-29 04:53:49,895 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:52,575 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 179 DAG size of output: 170 [2020-10-29 04:53:53,411 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-10-29 04:53:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:58,950 INFO L93 Difference]: Finished difference Result 114257 states and 181932 transitions. [2020-10-29 04:53:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:53:58,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2020-10-29 04:53:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:59,695 INFO L225 Difference]: With dead ends: 114257 [2020-10-29 04:53:59,695 INFO L226 Difference]: Without dead ends: 67048 [2020-10-29 04:53:59,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:53:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67048 states. [2020-10-29 04:54:02,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67048 to 66467. [2020-10-29 04:54:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66467 states. [2020-10-29 04:54:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66467 states to 66467 states and 99334 transitions. [2020-10-29 04:54:02,501 INFO L78 Accepts]: Start accepts. Automaton has 66467 states and 99334 transitions. Word has length 240 [2020-10-29 04:54:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:02,502 INFO L481 AbstractCegarLoop]: Abstraction has 66467 states and 99334 transitions. [2020-10-29 04:54:02,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:54:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 66467 states and 99334 transitions. [2020-10-29 04:54:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 04:54:02,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:02,644 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 04:54:02,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:54:02,644 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1045129481, now seen corresponding path program 1 times [2020-10-29 04:54:02,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:02,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762809134] [2020-10-29 04:54:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:02,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:54:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 04:54:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:08,413 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:08,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:08,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:54:08,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:08,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:08,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:08,629 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:54:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:54:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:08,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:54:08,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 04:54:08,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:08,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:54:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 04:54:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:54:08,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 04:54:08,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:08,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:54:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 83 proven. 46 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:54:09,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762809134] [2020-10-29 04:54:09,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:09,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:54:09,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959864442] [2020-10-29 04:54:09,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:54:09,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:09,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:54:09,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:09,119 INFO L87 Difference]: Start difference. First operand 66467 states and 99334 transitions. Second operand 8 states. [2020-10-29 04:54:09,587 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:10,258 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:54:10,911 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:19,830 INFO L93 Difference]: Finished difference Result 201426 states and 317571 transitions. [2020-10-29 04:54:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:54:19,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-29 04:54:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:21,267 INFO L225 Difference]: With dead ends: 201426 [2020-10-29 04:54:21,267 INFO L226 Difference]: Without dead ends: 135161 [2020-10-29 04:54:21,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:54:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135161 states. [2020-10-29 04:54:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135161 to 133601. [2020-10-29 04:54:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133601 states. [2020-10-29 04:54:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133601 states to 133601 states and 202024 transitions. [2020-10-29 04:54:26,862 INFO L78 Accepts]: Start accepts. Automaton has 133601 states and 202024 transitions. Word has length 259 [2020-10-29 04:54:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:26,863 INFO L481 AbstractCegarLoop]: Abstraction has 133601 states and 202024 transitions. [2020-10-29 04:54:26,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:54:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 133601 states and 202024 transitions. [2020-10-29 04:54:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-29 04:54:27,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:27,379 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:27,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:54:27,380 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:27,380 INFO L82 PathProgramCache]: Analyzing trace with hash -494683211, now seen corresponding path program 1 times [2020-10-29 04:54:27,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:27,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390417680] [2020-10-29 04:54:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:54:32,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:32,948 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:32,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:32,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:33,142 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 04:54:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:33,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:54:33,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:54:33,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:33,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:54:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:54:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:33,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:54:33,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:54:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 04:54:33,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390417680] [2020-10-29 04:54:33,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:33,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:33,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797370216] [2020-10-29 04:54:33,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:33,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:33,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:33,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:33,555 INFO L87 Difference]: Start difference. First operand 133601 states and 202024 transitions. Second operand 7 states. [2020-10-29 04:54:34,252 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:34,895 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:47,046 INFO L93 Difference]: Finished difference Result 340174 states and 561835 transitions. [2020-10-29 04:54:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:54:47,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-29 04:54:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:49,297 INFO L225 Difference]: With dead ends: 340174 [2020-10-29 04:54:49,297 INFO L226 Difference]: Without dead ends: 206790 [2020-10-29 04:54:49,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:54:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206790 states. [2020-10-29 04:54:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206790 to 206783. [2020-10-29 04:54:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206783 states. [2020-10-29 04:54:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206783 states to 206783 states and 349829 transitions. [2020-10-29 04:54:59,313 INFO L78 Accepts]: Start accepts. Automaton has 206783 states and 349829 transitions. Word has length 269 [2020-10-29 04:54:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:59,314 INFO L481 AbstractCegarLoop]: Abstraction has 206783 states and 349829 transitions. [2020-10-29 04:54:59,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 206783 states and 349829 transitions. [2020-10-29 04:55:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 04:55:00,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:00,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:00,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:55:00,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:00,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:00,496 INFO L82 PathProgramCache]: Analyzing trace with hash 971942965, now seen corresponding path program 1 times [2020-10-29 04:55:00,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:00,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667227365] [2020-10-29 04:55:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 04:55:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 04:55:05,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:05,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 04:55:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:55:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:06,031 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:06,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:06,224 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:55:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:06,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:06,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:55:06,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:55:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:06,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 04:55:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:06,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:55:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:55:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:06,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:55:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 04:55:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:06,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:55:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:55:06,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667227365] [2020-10-29 04:55:06,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:06,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:06,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074136409] [2020-10-29 04:55:06,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:06,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:06,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:06,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:06,733 INFO L87 Difference]: Start difference. First operand 206783 states and 349829 transitions. Second operand 7 states. [2020-10-29 04:55:07,213 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:11,945 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:19,234 INFO L93 Difference]: Finished difference Result 415381 states and 735147 transitions. [2020-10-29 04:55:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:55:19,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-29 04:55:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.