/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:11:37,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:11:37,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:11:37,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:11:37,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:11:37,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:11:37,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:11:37,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:11:37,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:11:37,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:11:37,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:11:37,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:11:37,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:11:37,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:11:37,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:11:37,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:11:37,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:11:37,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:11:37,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:11:37,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:11:37,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:11:37,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:11:38,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:11:38,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:11:38,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:11:38,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:11:38,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:11:38,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:11:38,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:11:38,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:11:38,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:11:38,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:11:38,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:11:38,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:11:38,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:11:38,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:11:38,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:11:38,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:11:38,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:11:38,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:11:38,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:11:38,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:11:38,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:11:38,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:11:38,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:11:38,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:11:38,082 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:11:38,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:11:38,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:11:38,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:11:38,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:11:38,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:11:38,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:11:38,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:11:38,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:11:38,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:11:38,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:11:38,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:11:38,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:11:38,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:11:38,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:11:38,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:11:38,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:11:38,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:11:38,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:11:38,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:11:38,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:11:38,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:11:38,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:11:38,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:11:38,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:11:38,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:11:38,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:11:38,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:11:38,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:11:38,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:11:38,511 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:11:38,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label37.c [2020-10-29 05:11:38,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/934fe2fb8/a4352313a552470b971babe9fdd5bafe/FLAGe18b8cdae [2020-10-29 05:11:39,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:11:39,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label37.c [2020-10-29 05:11:39,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/934fe2fb8/a4352313a552470b971babe9fdd5bafe/FLAGe18b8cdae [2020-10-29 05:11:40,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/934fe2fb8/a4352313a552470b971babe9fdd5bafe [2020-10-29 05:11:40,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:11:40,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:11:40,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:11:40,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:11:40,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:11:40,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:11:40" (1/1) ... [2020-10-29 05:11:40,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f29328c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:40, skipping insertion in model container [2020-10-29 05:11:40,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:11:40" (1/1) ... [2020-10-29 05:11:40,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:11:40,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:11:41,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:11:41,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:11:42,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:11:42,779 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:11:42,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42 WrapperNode [2020-10-29 05:11:42,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:11:42,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:11:42,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:11:42,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:11:42,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:42,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:42,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:42,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:43,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:43,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:43,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... [2020-10-29 05:11:43,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:11:43,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:11:43,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:11:43,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:11:43,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:11:43,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:11:43,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:11:43,235 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:11:43,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:11:43,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:11:43,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:11:43,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:11:43,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:11:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:11:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:11:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:11:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:11:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:11:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:11:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:11:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:11:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:11:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:11:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:11:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:11:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:11:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:11:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:11:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:11:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:11:50,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:11:50,436 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:11:50,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:50 BoogieIcfgContainer [2020-10-29 05:11:50,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:11:50,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:11:50,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:11:50,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:11:50,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:11:40" (1/3) ... [2020-10-29 05:11:50,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9115ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:50, skipping insertion in model container [2020-10-29 05:11:50,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:42" (2/3) ... [2020-10-29 05:11:50,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9115ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:50, skipping insertion in model container [2020-10-29 05:11:50,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:50" (3/3) ... [2020-10-29 05:11:50,451 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label37.c [2020-10-29 05:11:50,464 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:11:50,470 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:11:50,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:11:50,523 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:11:50,523 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:11:50,523 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:11:50,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:11:50,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:11:50,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:11:50,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:11:50,523 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:11:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:11:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-10-29 05:11:50,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:50,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:11:50,634 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2003540036, now seen corresponding path program 1 times [2020-10-29 05:11:50,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:50,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862081640] [2020-10-29 05:11:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:56,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 844 [2020-10-29 05:11:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:11:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 05:11:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:56,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:11:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:11:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 835 [2020-10-29 05:11:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:11:57,436 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:11:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:11:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:57,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:11:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:11:59,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862081640] [2020-10-29 05:11:59,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:11:59,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:11:59,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014957419] [2020-10-29 05:11:59,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:11:59,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:59,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:11:59,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:11:59,103 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-29 05:11:59,369 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:12:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:17,150 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:12:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:12:17,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 828 [2020-10-29 05:12:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:17,196 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:12:17,196 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:12:17,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:12:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:12:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:12:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:12:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-29 05:12:17,418 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 828 [2020-10-29 05:12:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:17,421 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-29 05:12:17,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:12:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-29 05:12:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-29 05:12:17,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:17,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:17,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:12:17,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash 195413286, now seen corresponding path program 1 times [2020-10-29 05:12:17,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:17,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615326285] [2020-10-29 05:12:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:22,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:22,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 854 [2020-10-29 05:12:22,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:12:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:12:22,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:22,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:22,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:12:22,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:12:22,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:12:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:12:24,737 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:24,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:24,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:24,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:12:24,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:24,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:24,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:24,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:24,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:12:24,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:12:24,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:24,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:12:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:12:31,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615326285] [2020-10-29 05:12:31,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:31,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:12:31,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148798800] [2020-10-29 05:12:31,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:12:31,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:31,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:12:31,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:12:31,383 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-29 05:12:31,880 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:12:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:50,511 INFO L93 Difference]: Finished difference Result 4173 states and 7578 transitions. [2020-10-29 05:12:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:12:50,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 836 [2020-10-29 05:12:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:50,524 INFO L225 Difference]: With dead ends: 4173 [2020-10-29 05:12:50,525 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:12:50,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 4 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 05:12:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:12:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:12:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:12:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2135 transitions. [2020-10-29 05:12:50,592 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2135 transitions. Word has length 836 [2020-10-29 05:12:50,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:50,593 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2135 transitions. [2020-10-29 05:12:50,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:12:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2135 transitions. [2020-10-29 05:12:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-29 05:12:50,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:50,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:50,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:12:50,606 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -825539811, now seen corresponding path program 1 times [2020-10-29 05:12:50,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:50,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065076138] [2020-10-29 05:12:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:55,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:55,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 877 [2020-10-29 05:12:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:12:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-29 05:12:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:55,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:12:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:12:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-29 05:12:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:12:57,533 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-29 05:12:57,732 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-29 05:12:57,940 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-29 05:12:58,108 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-10-29 05:12:58,329 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-10-29 05:12:58,562 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-10-29 05:12:58,830 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-29 05:12:59,119 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-10-29 05:12:59,379 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-10-29 05:12:59,708 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-10-29 05:13:00,145 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:00,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:00,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:00,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:00,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:00,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:13:00,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:00,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:13:00,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:00,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:13:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:13:04,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065076138] [2020-10-29 05:13:04,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:04,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:13:04,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331502158] [2020-10-29 05:13:04,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:13:04,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:04,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:13:04,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:13:04,381 INFO L87 Difference]: Start difference. First operand 1690 states and 2135 transitions. Second operand 17 states. [2020-10-29 05:13:05,155 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:13:05,575 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:13:07,716 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:13:11,195 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 05:13:11,572 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 05:13:13,675 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:13:14,250 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:13:16,225 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-29 05:13:18,513 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 05:13:18,923 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:13:19,913 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 05:13:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:23,332 INFO L93 Difference]: Finished difference Result 3896 states and 4973 transitions. [2020-10-29 05:13:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:13:23,334 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 859 [2020-10-29 05:13:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:23,346 INFO L225 Difference]: With dead ends: 3896 [2020-10-29 05:13:23,346 INFO L226 Difference]: Without dead ends: 2013 [2020-10-29 05:13:23,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:13:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-29 05:13:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2009. [2020-10-29 05:13:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-29 05:13:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2460 transitions. [2020-10-29 05:13:23,419 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2460 transitions. Word has length 859 [2020-10-29 05:13:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:23,420 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 2460 transitions. [2020-10-29 05:13:23,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:13:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2460 transitions. [2020-10-29 05:13:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2020-10-29 05:13:23,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:23,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:23,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:13:23,434 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash 490098778, now seen corresponding path program 1 times [2020-10-29 05:13:23,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:23,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066414064] [2020-10-29 05:13:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-29 05:13:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:13:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 05:13:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:13:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 05:13:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-29 05:13:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:29,107 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:29,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:29,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:29,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:29,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:13:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 05:13:29,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:29,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:13:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:13:30,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066414064] [2020-10-29 05:13:30,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:30,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:13:30,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599330963] [2020-10-29 05:13:30,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:13:30,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:30,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:13:30,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:13:30,340 INFO L87 Difference]: Start difference. First operand 2009 states and 2460 transitions. Second operand 5 states. [2020-10-29 05:13:30,683 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:13:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:42,971 INFO L93 Difference]: Finished difference Result 5710 states and 7143 transitions. [2020-10-29 05:13:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:13:42,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 890 [2020-10-29 05:13:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:43,000 INFO L225 Difference]: With dead ends: 5710 [2020-10-29 05:13:43,000 INFO L226 Difference]: Without dead ends: 3707 [2020-10-29 05:13:43,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:13:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2020-10-29 05:13:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3699. [2020-10-29 05:13:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3699 states. [2020-10-29 05:13:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 4527 transitions. [2020-10-29 05:13:43,126 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 4527 transitions. Word has length 890 [2020-10-29 05:13:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:43,129 INFO L481 AbstractCegarLoop]: Abstraction has 3699 states and 4527 transitions. [2020-10-29 05:13:43,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:13:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 4527 transitions. [2020-10-29 05:13:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-29 05:13:43,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:43,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:13:43,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:13:43,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:43,153 INFO L82 PathProgramCache]: Analyzing trace with hash 765891305, now seen corresponding path program 1 times [2020-10-29 05:13:43,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:43,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477801025] [2020-10-29 05:13:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:48,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 919 [2020-10-29 05:13:48,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:13:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 05:13:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:48,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:13:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 05:13:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-29 05:13:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:48,859 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:48,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:48,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:13:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 05:13:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:48,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:13:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:13:49,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477801025] [2020-10-29 05:13:49,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:49,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:13:49,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897968333] [2020-10-29 05:13:49,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:13:49,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:49,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:13:49,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:13:49,893 INFO L87 Difference]: Start difference. First operand 3699 states and 4527 transitions. Second operand 6 states. [2020-10-29 05:13:50,136 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:14:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:14:01,486 INFO L93 Difference]: Finished difference Result 10787 states and 13479 transitions. [2020-10-29 05:14:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:14:01,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 901 [2020-10-29 05:14:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:14:01,524 INFO L225 Difference]: With dead ends: 10787 [2020-10-29 05:14:01,524 INFO L226 Difference]: Without dead ends: 7094 [2020-10-29 05:14:01,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:14:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2020-10-29 05:14:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 7077. [2020-10-29 05:14:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7077 states. [2020-10-29 05:14:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7077 states to 7077 states and 8807 transitions. [2020-10-29 05:14:01,707 INFO L78 Accepts]: Start accepts. Automaton has 7077 states and 8807 transitions. Word has length 901 [2020-10-29 05:14:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:14:01,709 INFO L481 AbstractCegarLoop]: Abstraction has 7077 states and 8807 transitions. [2020-10-29 05:14:01,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:14:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7077 states and 8807 transitions. [2020-10-29 05:14:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-29 05:14:01,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:14:01,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:14:01,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:14:01,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:14:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:14:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1339074758, now seen corresponding path program 1 times [2020-10-29 05:14:01,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:14:01,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399869961] [2020-10-29 05:14:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:14:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:06,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-29 05:14:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:07,370 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:14:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:14:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:07,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:07,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:14:07,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:07,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:14:07,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:07,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:07,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:14:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:14:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:14:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399869961] [2020-10-29 05:14:08,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:14:08,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:14:08,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886572851] [2020-10-29 05:14:08,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:14:08,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:14:08,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:14:08,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:14:08,267 INFO L87 Difference]: Start difference. First operand 7077 states and 8807 transitions. Second operand 5 states. [2020-10-29 05:14:08,823 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:14:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:14:20,835 INFO L93 Difference]: Finished difference Result 20922 states and 26843 transitions. [2020-10-29 05:14:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:14:20,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 906 [2020-10-29 05:14:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:14:20,914 INFO L225 Difference]: With dead ends: 20922 [2020-10-29 05:14:20,914 INFO L226 Difference]: Without dead ends: 13851 [2020-10-29 05:14:20,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:14:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13851 states. [2020-10-29 05:14:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13851 to 13839. [2020-10-29 05:14:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13839 states. [2020-10-29 05:14:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13839 states to 13839 states and 16912 transitions. [2020-10-29 05:14:21,314 INFO L78 Accepts]: Start accepts. Automaton has 13839 states and 16912 transitions. Word has length 906 [2020-10-29 05:14:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:14:21,316 INFO L481 AbstractCegarLoop]: Abstraction has 13839 states and 16912 transitions. [2020-10-29 05:14:21,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:14:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 13839 states and 16912 transitions. [2020-10-29 05:14:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-29 05:14:21,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:14:21,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:14:21,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:14:21,375 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:14:21,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:14:21,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1678397285, now seen corresponding path program 1 times [2020-10-29 05:14:21,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:14:21,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853749581] [2020-10-29 05:14:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:14:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:26,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1145 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-29 05:14:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:27,177 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:14:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:14:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:27,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:14:27,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:14:27,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:27,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:27,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:14:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:27,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:14:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 05:14:27,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:27,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:27,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:14:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:27,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:27,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 05:14:27,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 05:14:27,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:27,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 05:14:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 05:14:28,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853749581] [2020-10-29 05:14:28,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:14:28,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:14:28,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71698015] [2020-10-29 05:14:28,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:14:28,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:14:28,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:14:28,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:14:28,874 INFO L87 Difference]: Start difference. First operand 13839 states and 16912 transitions. Second operand 5 states. [2020-10-29 05:14:29,201 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:14:41,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:14:41,134 INFO L93 Difference]: Finished difference Result 41156 states and 51895 transitions. [2020-10-29 05:14:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:14:41,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1125 [2020-10-29 05:14:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:14:41,409 INFO L225 Difference]: With dead ends: 41156 [2020-10-29 05:14:41,409 INFO L226 Difference]: Without dead ends: 27323 [2020-10-29 05:14:41,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:14:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27323 states. [2020-10-29 05:14:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27323 to 23959. [2020-10-29 05:14:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23959 states. [2020-10-29 05:14:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23959 states to 23959 states and 29443 transitions. [2020-10-29 05:14:42,118 INFO L78 Accepts]: Start accepts. Automaton has 23959 states and 29443 transitions. Word has length 1125 [2020-10-29 05:14:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:14:42,119 INFO L481 AbstractCegarLoop]: Abstraction has 23959 states and 29443 transitions. [2020-10-29 05:14:42,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:14:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 23959 states and 29443 transitions. [2020-10-29 05:14:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2020-10-29 05:14:42,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:14:42,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:14:42,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:14:42,212 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:14:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:14:42,213 INFO L82 PathProgramCache]: Analyzing trace with hash 19662772, now seen corresponding path program 1 times [2020-10-29 05:14:42,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:14:42,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561943775] [2020-10-29 05:14:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:14:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:47,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:47,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1156 [2020-10-29 05:14:47,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:14:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 05:14:47,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:47,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:14:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 05:14:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-29 05:14:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:49,697 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:14:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:14:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:14:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:14:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:49,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:14:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:50,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 05:14:50,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:50,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 05:14:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:50,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-29 05:14:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:14:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:50,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:50,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 05:14:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:14:59,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561943775] [2020-10-29 05:14:59,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:14:59,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:14:59,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480083849] [2020-10-29 05:14:59,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:14:59,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:14:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:14:59,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:14:59,551 INFO L87 Difference]: Start difference. First operand 23959 states and 29443 transitions. Second operand 5 states. [2020-10-29 05:15:02,663 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:15:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:15:12,147 INFO L93 Difference]: Finished difference Result 48709 states and 60179 transitions. [2020-10-29 05:15:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:15:12,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1136 [2020-10-29 05:15:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:15:12,224 INFO L225 Difference]: With dead ends: 48709 [2020-10-29 05:15:12,225 INFO L226 Difference]: Without dead ends: 23971 [2020-10-29 05:15:12,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 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 05:15:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23971 states. [2020-10-29 05:15:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23971 to 23959. [2020-10-29 05:15:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23959 states. [2020-10-29 05:15:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23959 states to 23959 states and 29415 transitions. [2020-10-29 05:15:12,825 INFO L78 Accepts]: Start accepts. Automaton has 23959 states and 29415 transitions. Word has length 1136 [2020-10-29 05:15:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:15:12,826 INFO L481 AbstractCegarLoop]: Abstraction has 23959 states and 29415 transitions. [2020-10-29 05:15:12,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:15:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 23959 states and 29415 transitions. [2020-10-29 05:15:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2020-10-29 05:15:12,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:12,896 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:15:12,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:15:12,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:12,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1918753322, now seen corresponding path program 1 times [2020-10-29 05:15:12,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:12,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179122283] [2020-10-29 05:15:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1290 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5211 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-29 05:15:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:18,623 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:15:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:15:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:18,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:18,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:15:18,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:15:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:18,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:15:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:15:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:15:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:18,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:15:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:15:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:15:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 05:15:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 05:15:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:15:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:19,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:19,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 05:15:19,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 05:15:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 556 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 05:15:20,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179122283] [2020-10-29 05:15:20,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:15:20,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:15:20,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011463194] [2020-10-29 05:15:20,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:15:20,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:15:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:15:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:15:20,758 INFO L87 Difference]: Start difference. First operand 23959 states and 29415 transitions. Second operand 7 states. [2020-10-29 05:15:21,373 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:15:21,626 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 93