/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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:58:01,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:58:01,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:58:01,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:58:01,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:58:01,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:58:01,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:58:01,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:58:01,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:58:01,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:58:01,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:58:01,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:58:01,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:58:01,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:58:01,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:58:01,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:58:01,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:58:01,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:58:01,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:58:01,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:58:01,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:58:01,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:58:01,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:58:01,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:58:01,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:58:01,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:58:01,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:58:01,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:58:01,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:58:01,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:58:01,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:58:01,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:58:01,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:58:01,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:58:01,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:58:01,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:58:01,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:58:01,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:58:01,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:58:01,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:58:01,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:58:01,171 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 04:58:01,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:58:01,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:58:01,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:58:01,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:58:01,204 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:58:01,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:58:01,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:58:01,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:58:01,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:58:01,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:58:01,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:58:01,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:58:01,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:58:01,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:58:01,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:58:01,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:58:01,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:58:01,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:58:01,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:58:01,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:58:01,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:58:01,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:01,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:58:01,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:58:01,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:58:01,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:58:01,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:58:01,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:58:01,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:58:01,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:58:01,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:58:01,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:58:01,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:58:01,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:58:01,658 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:58:01,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label38.c [2020-10-29 04:58:01,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebc037e5f/b7fb55a4a53048c3b1edeeb06819ac77/FLAG7189d6ec5 [2020-10-29 04:58:02,603 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:58:02,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label38.c [2020-10-29 04:58:02,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebc037e5f/b7fb55a4a53048c3b1edeeb06819ac77/FLAG7189d6ec5 [2020-10-29 04:58:02,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebc037e5f/b7fb55a4a53048c3b1edeeb06819ac77 [2020-10-29 04:58:02,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:58:02,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:58:02,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:02,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:58:02,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:58:02,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:02" (1/1) ... [2020-10-29 04:58:02,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274f5357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:02, skipping insertion in model container [2020-10-29 04:58:02,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:02" (1/1) ... [2020-10-29 04:58:02,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:58:02,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:58:03,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:03,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:58:04,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:04,281 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:58:04,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04 WrapperNode [2020-10-29 04:58:04,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:04,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:58:04,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:58:04,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:58:04,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (1/1) ... [2020-10-29 04:58:04,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:58:04,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:58:04,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:58:04,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:58:04,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (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 04:58:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:58:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:58:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:58:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:58:04,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:58:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:58:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:58:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:58:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:58:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:58:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:58:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:58:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:58:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:58:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:58:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:58:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:58:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:58:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:06,693 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:06,693 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:06,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:06 BoogieIcfgContainer [2020-10-29 04:58:06,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:06,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:06,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:06,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:06,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:58:02" (1/3) ... [2020-10-29 04:58:06,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38da81b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:06, skipping insertion in model container [2020-10-29 04:58:06,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:04" (2/3) ... [2020-10-29 04:58:06,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38da81b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:06, skipping insertion in model container [2020-10-29 04:58:06,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:06" (3/3) ... [2020-10-29 04:58:06,705 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label38.c [2020-10-29 04:58:06,718 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:06,723 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:06,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:06,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:06,765 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:06,765 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:06,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:06,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:06,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:06,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:06,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 04:58:06,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:06,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:06,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:06,819 INFO L82 PathProgramCache]: Analyzing trace with hash -169364848, now seen corresponding path program 1 times [2020-10-29 04:58:06,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:06,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699487897] [2020-10-29 04:58:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:11,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:11,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 04:58:11,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4337 [2020-10-29 04:58:11,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:11,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 04:58:11,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:58:12,235 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:12,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:12,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:58:12,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:12,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:12,429 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 04:58:12,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699487897] [2020-10-29 04:58:12,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:58:12,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:58:12,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866739393] [2020-10-29 04:58:12,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:58:12,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:12,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:58:12,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:58:12,461 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:58:12,749 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:58:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:16,128 INFO L93 Difference]: Finished difference Result 869 states and 1524 transitions. [2020-10-29 04:58:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:16,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-29 04:58:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:16,148 INFO L225 Difference]: With dead ends: 869 [2020-10-29 04:58:16,149 INFO L226 Difference]: Without dead ends: 477 [2020-10-29 04:58:16,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-29 04:58:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 468. [2020-10-29 04:58:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-29 04:58:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 722 transitions. [2020-10-29 04:58:16,279 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 722 transitions. Word has length 208 [2020-10-29 04:58:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:16,284 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 722 transitions. [2020-10-29 04:58:16,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:58:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 722 transitions. [2020-10-29 04:58:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 04:58:16,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:16,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:16,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:58:16,300 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:16,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1428298620, now seen corresponding path program 1 times [2020-10-29 04:58:16,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:16,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512243595] [2020-10-29 04:58:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:17,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:20,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:20,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 04:58:20,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:58:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-10-29 04:58:20,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:20,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:58:20,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 04:58:20,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:58:20,748 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:20,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:20,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:58:20,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:20,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:58:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:20,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:20,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:21,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512243595] [2020-10-29 04:58:21,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:21,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:21,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090806181] [2020-10-29 04:58:21,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:21,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:21,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:21,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:21,075 INFO L87 Difference]: Start difference. First operand 468 states and 722 transitions. Second operand 5 states. [2020-10-29 04:58:21,539 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:24,929 INFO L93 Difference]: Finished difference Result 1354 states and 2109 transitions. [2020-10-29 04:58:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:24,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-29 04:58:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:24,935 INFO L225 Difference]: With dead ends: 1354 [2020-10-29 04:58:24,935 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 04:58:24,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 04:58:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2020-10-29 04:58:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 04:58:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 720 transitions. [2020-10-29 04:58:24,979 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 720 transitions. Word has length 218 [2020-10-29 04:58:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:24,979 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 720 transitions. [2020-10-29 04:58:24,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 720 transitions. [2020-10-29 04:58:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 04:58:24,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:24,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:24,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:58:24,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash -372681045, now seen corresponding path program 1 times [2020-10-29 04:58:24,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:24,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109186499] [2020-10-29 04:58:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:27,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 04:58:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3428 [2020-10-29 04:58:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:58:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 04:58:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:29,050 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:29,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:29,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:29,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:58:29,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:29,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:29,212 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:58:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:29,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:29,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:58:29,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:29,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 04:58:29,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:29,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:58:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:29,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109186499] [2020-10-29 04:58:29,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:29,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:29,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602006239] [2020-10-29 04:58:29,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:29,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:29,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:29,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:29,400 INFO L87 Difference]: Start difference. First operand 467 states and 720 transitions. Second operand 5 states. [2020-10-29 04:58:29,712 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:33,394 INFO L93 Difference]: Finished difference Result 1364 states and 2134 transitions. [2020-10-29 04:58:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:33,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-29 04:58:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:33,401 INFO L225 Difference]: With dead ends: 1364 [2020-10-29 04:58:33,402 INFO L226 Difference]: Without dead ends: 903 [2020-10-29 04:58:33,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-29 04:58:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 888. [2020-10-29 04:58:33,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-29 04:58:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1354 transitions. [2020-10-29 04:58:33,448 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1354 transitions. Word has length 222 [2020-10-29 04:58:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:33,449 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 1354 transitions. [2020-10-29 04:58:33,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1354 transitions. [2020-10-29 04:58:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 04:58:33,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:33,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:33,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:58:33,456 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1947785625, now seen corresponding path program 1 times [2020-10-29 04:58:33,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:33,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690575901] [2020-10-29 04:58:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:36,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-29 04:58:36,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2497 [2020-10-29 04:58:36,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:36,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:58:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 04:58:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:36,402 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:36,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:58:36,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:36,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:58:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:58:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:58:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:36,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690575901] [2020-10-29 04:58:36,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:36,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:36,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706384192] [2020-10-29 04:58:36,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:36,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:36,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:36,666 INFO L87 Difference]: Start difference. First operand 888 states and 1354 transitions. Second operand 5 states. [2020-10-29 04:58:36,978 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:40,172 INFO L93 Difference]: Finished difference Result 2629 states and 4078 transitions. [2020-10-29 04:58:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:40,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-29 04:58:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:40,185 INFO L225 Difference]: With dead ends: 2629 [2020-10-29 04:58:40,186 INFO L226 Difference]: Without dead ends: 1747 [2020-10-29 04:58:40,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-29 04:58:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1742. [2020-10-29 04:58:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2020-10-29 04:58:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2549 transitions. [2020-10-29 04:58:40,262 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2549 transitions. Word has length 224 [2020-10-29 04:58:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:40,262 INFO L481 AbstractCegarLoop]: Abstraction has 1742 states and 2549 transitions. [2020-10-29 04:58:40,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2549 transitions. [2020-10-29 04:58:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 04:58:40,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:40,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:40,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:58:40,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:40,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1964416206, now seen corresponding path program 1 times [2020-10-29 04:58:40,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:40,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480717107] [2020-10-29 04:58:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:45,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:45,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:58:45,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 04:58:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:45,705 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:45,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:45,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:45,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:45,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:58:45,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:45,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:45,888 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:58:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:45,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:45,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:58:45,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:58:45,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:45,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:58:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:58:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:45,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:58:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 04:58:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:45,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:58:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:58:46,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480717107] [2020-10-29 04:58:46,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:46,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:46,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085970628] [2020-10-29 04:58:46,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:46,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:46,187 INFO L87 Difference]: Start difference. First operand 1742 states and 2549 transitions. Second operand 5 states. [2020-10-29 04:58:46,445 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:49,840 INFO L93 Difference]: Finished difference Result 5162 states and 7716 transitions. [2020-10-29 04:58:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:49,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-29 04:58:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:49,865 INFO L225 Difference]: With dead ends: 5162 [2020-10-29 04:58:49,865 INFO L226 Difference]: Without dead ends: 3426 [2020-10-29 04:58:49,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2020-10-29 04:58:49,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3419. [2020-10-29 04:58:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3419 states. [2020-10-29 04:58:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 4949 transitions. [2020-10-29 04:58:50,007 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 4949 transitions. Word has length 237 [2020-10-29 04:58:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:50,007 INFO L481 AbstractCegarLoop]: Abstraction has 3419 states and 4949 transitions. [2020-10-29 04:58:50,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 4949 transitions. [2020-10-29 04:58:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-29 04:58:50,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:50,022 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:50,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:58:50,023 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1768851237, now seen corresponding path program 1 times [2020-10-29 04:58:50,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:50,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849140986] [2020-10-29 04:58:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:50,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:50,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:58:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:55,547 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:55,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:55,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:55,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:55,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:55,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:58:55,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:55,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:55,725 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:58:55,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:55,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:55,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:58:55,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:55,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:58:55,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:55,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:58:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:58:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:58:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 04:58:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:58:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:58:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:56,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:58:56,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 04:58:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:56,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:58:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:58:56,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849140986] [2020-10-29 04:58:56,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:56,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:58:56,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585420060] [2020-10-29 04:58:56,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:56,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:56,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:56,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:56,290 INFO L87 Difference]: Start difference. First operand 3419 states and 4949 transitions. Second operand 8 states. [2020-10-29 04:58:56,721 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:57,521 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:03,287 INFO L93 Difference]: Finished difference Result 13016 states and 21496 transitions. [2020-10-29 04:59:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:59:03,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 264 [2020-10-29 04:59:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:03,371 INFO L225 Difference]: With dead ends: 13016 [2020-10-29 04:59:03,371 INFO L226 Difference]: Without dead ends: 9603 [2020-10-29 04:59:03,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:59:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9603 states. [2020-10-29 04:59:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9603 to 9510. [2020-10-29 04:59:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9510 states. [2020-10-29 04:59:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 14344 transitions. [2020-10-29 04:59:03,923 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 14344 transitions. Word has length 264 [2020-10-29 04:59:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:03,924 INFO L481 AbstractCegarLoop]: Abstraction has 9510 states and 14344 transitions. [2020-10-29 04:59:03,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:59:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 14344 transitions. [2020-10-29 04:59:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 04:59:03,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:03,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:03,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:59:03,991 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2129464555, now seen corresponding path program 1 times [2020-10-29 04:59:03,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:03,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613706739] [2020-10-29 04:59:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:04,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:08,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:59:09,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:09,350 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:09,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:59:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:09,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:59:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:09,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:09,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:09,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 04:59:09,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:09,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:09,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:59:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 04:59:09,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613706739] [2020-10-29 04:59:09,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:09,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:09,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133268564] [2020-10-29 04:59:09,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:09,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:09,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:09,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:09,972 INFO L87 Difference]: Start difference. First operand 9510 states and 14344 transitions. Second operand 7 states. [2020-10-29 04:59:10,256 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:12,037 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:14,608 INFO L93 Difference]: Finished difference Result 26764 states and 41774 transitions. [2020-10-29 04:59:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:14,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 04:59:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:14,746 INFO L225 Difference]: With dead ends: 26764 [2020-10-29 04:59:14,746 INFO L226 Difference]: Without dead ends: 17268 [2020-10-29 04:59:14,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:59:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17268 states. [2020-10-29 04:59:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17268 to 17085. [2020-10-29 04:59:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17085 states. [2020-10-29 04:59:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17085 states to 17085 states and 26142 transitions. [2020-10-29 04:59:15,869 INFO L78 Accepts]: Start accepts. Automaton has 17085 states and 26142 transitions. Word has length 271 [2020-10-29 04:59:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:15,870 INFO L481 AbstractCegarLoop]: Abstraction has 17085 states and 26142 transitions. [2020-10-29 04:59:15,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17085 states and 26142 transitions. [2020-10-29 04:59:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 04:59:15,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:15,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:15,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:59:15,985 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:15,986 INFO L82 PathProgramCache]: Analyzing trace with hash 261839063, now seen corresponding path program 1 times [2020-10-29 04:59:15,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:15,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956121947] [2020-10-29 04:59:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:21,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:21,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 04:59:21,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 04:59:21,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:21,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:59:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 04:59:21,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:21,611 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:21,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:21,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:21,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:59:21,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:21,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:21,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:21,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:21,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:59:21,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:59:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:21,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:59:21,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:21,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:59:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:59:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 70 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:59:22,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956121947] [2020-10-29 04:59:22,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:22,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:59:22,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558555323] [2020-10-29 04:59:22,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:59:22,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:22,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:59:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:59:22,584 INFO L87 Difference]: Start difference. First operand 17085 states and 26142 transitions. Second operand 10 states. [2020-10-29 04:59:22,880 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:59:24,170 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 04:59:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:28,586 INFO L93 Difference]: Finished difference Result 51954 states and 84444 transitions. [2020-10-29 04:59:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:59:28,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 271 [2020-10-29 04:59:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:28,791 INFO L225 Difference]: With dead ends: 51954 [2020-10-29 04:59:28,791 INFO L226 Difference]: Without dead ends: 34826 [2020-10-29 04:59:28,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:59:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34826 states. [2020-10-29 04:59:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34826 to 34047. [2020-10-29 04:59:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34047 states. [2020-10-29 04:59:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34047 states to 34047 states and 52378 transitions. [2020-10-29 04:59:30,804 INFO L78 Accepts]: Start accepts. Automaton has 34047 states and 52378 transitions. Word has length 271 [2020-10-29 04:59:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:30,805 INFO L481 AbstractCegarLoop]: Abstraction has 34047 states and 52378 transitions. [2020-10-29 04:59:30,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:59:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 34047 states and 52378 transitions. [2020-10-29 04:59:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 04:59:31,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:31,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:31,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:59:31,200 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:31,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash 271141406, now seen corresponding path program 1 times [2020-10-29 04:59:31,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:31,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133294824] [2020-10-29 04:59:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 04:59:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:36,559 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:36,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:36,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:59:36,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:36,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 04:59:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:59:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 04:59:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:59:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 83 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:59:37,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133294824] [2020-10-29 04:59:37,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:37,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:37,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870564214] [2020-10-29 04:59:37,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:37,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:37,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:37,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:37,124 INFO L87 Difference]: Start difference. First operand 34047 states and 52378 transitions. Second operand 7 states. [2020-10-29 04:59:37,379 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:38,196 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:42,621 INFO L93 Difference]: Finished difference Result 95134 states and 159178 transitions. [2020-10-29 04:59:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:42,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-29 04:59:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:43,030 INFO L225 Difference]: With dead ends: 95134 [2020-10-29 04:59:43,030 INFO L226 Difference]: Without dead ends: 61965 [2020-10-29 04:59:43,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:59:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61965 states. [2020-10-29 04:59:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61965 to 60555. [2020-10-29 04:59:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60555 states. [2020-10-29 04:59:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60555 states to 60555 states and 95736 transitions. [2020-10-29 04:59:46,455 INFO L78 Accepts]: Start accepts. Automaton has 60555 states and 95736 transitions. Word has length 287 [2020-10-29 04:59:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:46,455 INFO L481 AbstractCegarLoop]: Abstraction has 60555 states and 95736 transitions. [2020-10-29 04:59:46,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 60555 states and 95736 transitions. [2020-10-29 04:59:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 04:59:46,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:46,655 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:46,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:59:46,655 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2107984898, now seen corresponding path program 1 times [2020-10-29 04:59:46,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:46,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251970465] [2020-10-29 04:59:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 04:59:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:51,992 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:51,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:52,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:52,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:52,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:59:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 04:59:52,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:52,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:59:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:59:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:59:52,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:52,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:59:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:59:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:59:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 80 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 04:59:52,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251970465] [2020-10-29 04:59:52,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:52,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:52,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111829374] [2020-10-29 04:59:52,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:52,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:52,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:52,549 INFO L87 Difference]: Start difference. First operand 60555 states and 95736 transitions. Second operand 7 states. [2020-10-29 04:59:52,858 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:54,303 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:59:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:58,808 INFO L93 Difference]: Finished difference Result 174114 states and 297679 transitions. [2020-10-29 04:59:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:58,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-29 04:59:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:59,744 INFO L225 Difference]: With dead ends: 174114 [2020-10-29 04:59:59,744 INFO L226 Difference]: Without dead ends: 114421 [2020-10-29 04:59:59,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114421 states. [2020-10-29 05:00:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114421 to 111579. [2020-10-29 05:00:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111579 states. [2020-10-29 05:00:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111579 states to 111579 states and 169426 transitions. [2020-10-29 05:00:04,476 INFO L78 Accepts]: Start accepts. Automaton has 111579 states and 169426 transitions. Word has length 297 [2020-10-29 05:00:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:04,476 INFO L481 AbstractCegarLoop]: Abstraction has 111579 states and 169426 transitions. [2020-10-29 05:00:04,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 111579 states and 169426 transitions. [2020-10-29 05:00:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-29 05:00:05,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:05,103 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:05,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:00:05,103 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:05,104 INFO L82 PathProgramCache]: Analyzing trace with hash 702010289, now seen corresponding path program 1 times [2020-10-29 05:00:05,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922917087] [2020-10-29 05:00:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:00:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 05:00:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:10,480 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:00:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:00:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:00:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 05:00:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:00:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 05:00:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:00:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:10,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:00:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:00:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 104 proven. 40 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 05:00:11,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922917087] [2020-10-29 05:00:11,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:11,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:11,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876246703] [2020-10-29 05:00:11,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:11,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:11,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:11,018 INFO L87 Difference]: Start difference. First operand 111579 states and 169426 transitions. Second operand 7 states. [2020-10-29 05:00:11,279 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:12,475 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:00:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:16,734 INFO L93 Difference]: Finished difference Result 213279 states and 315528 transitions. [2020-10-29 05:00:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:16,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-29 05:00:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:17,168 INFO L225 Difference]: With dead ends: 213279 [2020-10-29 05:00:17,168 INFO L226 Difference]: Without dead ends: 101806 [2020-10-29 05:00:17,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101806 states. [2020-10-29 05:00:19,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101806 to 100580. [2020-10-29 05:00:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100580 states. [2020-10-29 05:00:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100580 states to 100580 states and 129486 transitions. [2020-10-29 05:00:20,396 INFO L78 Accepts]: Start accepts. Automaton has 100580 states and 129486 transitions. Word has length 308 [2020-10-29 05:00:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:20,396 INFO L481 AbstractCegarLoop]: Abstraction has 100580 states and 129486 transitions. [2020-10-29 05:00:20,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 100580 states and 129486 transitions. [2020-10-29 05:00:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 05:00:20,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:20,538 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:20,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:00:20,538 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:20,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:20,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1719646452, now seen corresponding path program 1 times [2020-10-29 05:00:20,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:20,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702297515] [2020-10-29 05:00:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-29 05:00:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,874 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:00:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:26,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:26,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:00:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 05:00:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:26,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 05:00:26,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 05:00:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:26,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 05:00:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 05:00:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:26,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 05:00:26,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:26,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 05:00:26,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:26,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 05:00:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 05:00:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:26,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:26,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:26,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 05:00:26,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:26,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:00:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 158 proven. 58 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 05:00:26,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702297515] [2020-10-29 05:00:26,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:26,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:26,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966109486] [2020-10-29 05:00:26,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:26,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:26,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:26,661 INFO L87 Difference]: Start difference. First operand 100580 states and 129486 transitions. Second operand 8 states. [2020-10-29 05:00:27,154 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:00:28,356 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:00:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:35,520 INFO L93 Difference]: Finished difference Result 248644 states and 350211 transitions. [2020-10-29 05:00:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:00:35,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 338 [2020-10-29 05:00:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:36,674 INFO L225 Difference]: With dead ends: 248644 [2020-10-29 05:00:36,674 INFO L226 Difference]: Without dead ends: 148486 [2020-10-29 05:00:36,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:00:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148486 states. [2020-10-29 05:00:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148486 to 144165. [2020-10-29 05:00:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144165 states. [2020-10-29 05:00:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144165 states to 144165 states and 189006 transitions. [2020-10-29 05:00:42,065 INFO L78 Accepts]: Start accepts. Automaton has 144165 states and 189006 transitions. Word has length 338 [2020-10-29 05:00:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:42,065 INFO L481 AbstractCegarLoop]: Abstraction has 144165 states and 189006 transitions. [2020-10-29 05:00:42,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:00:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 144165 states and 189006 transitions. [2020-10-29 05:00:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 05:00:42,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:42,235 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:42,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:00:42,235 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash -52524116, now seen corresponding path program 2 times [2020-10-29 05:00:42,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:42,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265957833] [2020-10-29 05:00:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:42,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 05:00:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 05:00:47,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:47,635 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:47,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:47,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:00:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:47,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:00:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:47,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 05:00:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:47,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:47,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:00:47,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:47,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:00:47,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 05:00:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:48,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 05:00:48,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 05:00:48,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:48,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 05:00:48,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:48,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 05:00:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:48,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:00:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:48,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:00:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 191 proven. 26 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 05:00:48,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265957833] [2020-10-29 05:00:48,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:48,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:48,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054815706] [2020-10-29 05:00:48,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:48,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:48,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:48,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:48,273 INFO L87 Difference]: Start difference. First operand 144165 states and 189006 transitions. Second operand 8 states. [2020-10-29 05:00:48,864 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:50,375 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:52,854 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:10,447 INFO L93 Difference]: Finished difference Result 698362 states and 1032303 transitions. [2020-10-29 05:01:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 05:01:10,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 338 [2020-10-29 05:01:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted.