/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/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:57:09,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:57:09,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:57:09,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:57:09,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:57:09,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:57:09,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:57:09,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:57:09,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:57:09,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:57:09,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:57:09,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:57:09,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:57:09,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:57:09,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:57:09,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:57:09,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:57:09,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:57:09,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:57:09,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:57:09,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:57:09,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:57:09,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:57:09,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:57:09,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:57:09,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:57:09,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:57:09,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:57:09,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:57:09,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:57:09,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:57:09,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:57:09,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:57:09,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:57:09,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:57:09,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:57:09,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:57:09,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:57:09,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:57:09,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:57:09,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:57:09,255 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 09:57:09,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:57:09,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:57:09,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:57:09,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:57:09,284 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:57:09,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:57:09,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:57:09,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:57:09,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:57:09,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:57:09,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:57:09,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:57:09,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:57:09,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:57:09,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:57:09,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:57:09,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:57:09,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:57:09,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:57:09,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:57:09,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:57:09,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:57:09,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:57:09,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:57:09,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:57:09,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:57:09,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:57:09,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:57:09,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:57:09,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:57:09,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:57:09,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:57:09,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:57:09,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:57:09,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:57:09,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2020-10-29 09:57:09,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73a798064/a4effc0dabc04d9db561848a0c2aa3d1/FLAG086189231 [2020-10-29 09:57:10,422 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:57:10,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_05.i [2020-10-29 09:57:10,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73a798064/a4effc0dabc04d9db561848a0c2aa3d1/FLAG086189231 [2020-10-29 09:57:10,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73a798064/a4effc0dabc04d9db561848a0c2aa3d1 [2020-10-29 09:57:10,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:57:10,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:57:10,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:57:10,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:57:10,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:57:10,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:57:10" (1/1) ... [2020-10-29 09:57:10,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b742876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:10, skipping insertion in model container [2020-10-29 09:57:10,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:57:10" (1/1) ... [2020-10-29 09:57:10,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:57:10,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:57:10,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:57:10,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:57:11,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:57:11,035 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:57:11,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11 WrapperNode [2020-10-29 09:57:11,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:57:11,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:57:11,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:57:11,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:57:11,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (1/1) ... [2020-10-29 09:57:11,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:57:11,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:57:11,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:57:11,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:57:11,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (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 09:57:11,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:57:11,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:57:11,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:57:11,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:57:11,188 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2020-10-29 09:57:11,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:57:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:57:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:57:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:57:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:57:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:57:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:57:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:57:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2020-10-29 09:57:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:57:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:57:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:57:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:57:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:57:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:57:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:57:11,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:57:11,854 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:57:11,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:57:11 BoogieIcfgContainer [2020-10-29 09:57:11,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:57:11,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:57:11,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:57:11,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:57:11,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:57:10" (1/3) ... [2020-10-29 09:57:11,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54624ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:57:11, skipping insertion in model container [2020-10-29 09:57:11,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:11" (2/3) ... [2020-10-29 09:57:11,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54624ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:57:11, skipping insertion in model container [2020-10-29 09:57:11,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:57:11" (3/3) ... [2020-10-29 09:57:11,871 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2020-10-29 09:57:11,886 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:57:11,891 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:57:11,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:57:11,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:57:11,948 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:57:11,948 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:57:11,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:57:11,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:57:11,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:57:11,948 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:57:11,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:57:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 09:57:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:57:11,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:11,981 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] [2020-10-29 09:57:11,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:11,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1174407567, now seen corresponding path program 1 times [2020-10-29 09:57:12,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:12,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062530328] [2020-10-29 09:57:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:12,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:57:12,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:57:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 09:57:12,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:12,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:57:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:57:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:57:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:12,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:57:12,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:12,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:12,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:12,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:57:12,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:12,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:57:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:57:12,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:12,709 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 09:57:12,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062530328] [2020-10-29 09:57:12,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:57:12,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:57:12,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352453744] [2020-10-29 09:57:12,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:57:12,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:12,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:57:12,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:57:12,736 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 7 states. [2020-10-29 09:57:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:13,260 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2020-10-29 09:57:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:57:13,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-29 09:57:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:13,272 INFO L225 Difference]: With dead ends: 75 [2020-10-29 09:57:13,272 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:57:13,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:57:13,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:57:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-29 09:57:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 09:57:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-29 09:57:13,327 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-10-29 09:57:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:13,327 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-29 09:57:13,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:57:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-29 09:57:13,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:57:13,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:13,329 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] [2020-10-29 09:57:13,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:57:13,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash -330905265, now seen corresponding path program 1 times [2020-10-29 09:57:13,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:13,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776213266] [2020-10-29 09:57:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:14,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:14,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:14,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:57:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:14,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:14,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:57:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:57:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:57:14,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:14,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:57:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:57:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:14,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776213266] [2020-10-29 09:57:14,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:14,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:57:14,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826912152] [2020-10-29 09:57:14,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:57:14,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:14,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:57:14,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:57:14,431 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-29 09:57:14,626 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-29 09:57:15,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:15,052 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-29 09:57:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:57:15,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-29 09:57:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:15,055 INFO L225 Difference]: With dead ends: 63 [2020-10-29 09:57:15,055 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:57:15,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:57:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:57:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-29 09:57:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 09:57:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 09:57:15,066 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-29 09:57:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:15,066 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 09:57:15,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:57:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 09:57:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:57:15,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:15,068 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] [2020-10-29 09:57:15,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:57:15,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:15,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:15,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1918417299, now seen corresponding path program 1 times [2020-10-29 09:57:15,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:15,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483141830] [2020-10-29 09:57:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-29 09:57:15,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:15,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:57:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:57:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:57:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:57:15,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:57:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 09:57:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:15,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:57:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:57:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:57:15,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483141830] [2020-10-29 09:57:15,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:15,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:57:15,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281990473] [2020-10-29 09:57:15,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:57:15,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:15,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:57:15,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:57:15,989 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-29 09:57:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:16,528 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-29 09:57:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:57:16,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:57:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:16,530 INFO L225 Difference]: With dead ends: 61 [2020-10-29 09:57:16,530 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:57:16,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:57:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:57:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2020-10-29 09:57:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 09:57:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-29 09:57:16,554 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 27 [2020-10-29 09:57:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:16,554 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-29 09:57:16,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:57:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-29 09:57:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:57:16,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:16,557 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] [2020-10-29 09:57:16,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:57:16,558 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash 298874923, now seen corresponding path program 2 times [2020-10-29 09:57:16,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:16,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72266260] [2020-10-29 09:57:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:18,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:57:18,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:57:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2383 [2020-10-29 09:57:18,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:18,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:57:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:19,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:19,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:19,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:57:19,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:19,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:19,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:19,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:57:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:57:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-29 09:57:19,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:19,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:57:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:57:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72266260] [2020-10-29 09:57:19,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:19,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:57:19,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354400260] [2020-10-29 09:57:19,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:57:19,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:19,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:57:19,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:57:19,584 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-10-29 09:57:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:20,136 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-29 09:57:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:57:20,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 09:57:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:20,138 INFO L225 Difference]: With dead ends: 67 [2020-10-29 09:57:20,138 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:57:20,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:57:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:57:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-29 09:57:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:57:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-29 09:57:20,151 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 31 [2020-10-29 09:57:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:20,151 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-29 09:57:20,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:57:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-29 09:57:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:57:20,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:20,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 09:57:20,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:57:20,153 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:20,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1684591933, now seen corresponding path program 3 times [2020-10-29 09:57:20,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:20,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552587084] [2020-10-29 09:57:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:25,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:57:25,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:57:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:57:25,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:25,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:57:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:57:25,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:25,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:57:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:57:26,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:57:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-29 09:57:26,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:26,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:57:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:57:26,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552587084] [2020-10-29 09:57:26,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:26,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:57:26,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80191440] [2020-10-29 09:57:26,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:57:26,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:26,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:57:26,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:57:26,700 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 9 states. [2020-10-29 09:57:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:27,195 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-10-29 09:57:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:57:27,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-29 09:57:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:27,197 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:57:27,197 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:57:27,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:57:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:57:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-29 09:57:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 09:57:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-29 09:57:27,208 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 35 [2020-10-29 09:57:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:27,208 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-29 09:57:27,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:57:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-29 09:57:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:57:27,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:27,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:27,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:57:27,210 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash -417388545, now seen corresponding path program 4 times [2020-10-29 09:57:27,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:27,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075775209] [2020-10-29 09:57:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:57:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:57:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:57:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:32,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:57:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:32,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:32,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:32,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:57:32,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:34,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:57:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:57:34,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2120 [2020-10-29 09:57:34,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:34,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:57:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:57:34,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075775209] [2020-10-29 09:57:34,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:34,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:57:34,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527655545] [2020-10-29 09:57:34,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:57:34,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:34,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:57:34,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:57:34,488 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 9 states. [2020-10-29 09:57:35,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:35,043 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-10-29 09:57:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:57:35,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-29 09:57:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:35,046 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:57:35,046 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 09:57:35,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:57:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 09:57:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-29 09:57:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 09:57:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-29 09:57:35,066 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 38 [2020-10-29 09:57:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:35,068 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-29 09:57:35,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:57:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-29 09:57:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:57:35,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:35,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:35,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:57:35,070 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1214235411, now seen corresponding path program 5 times [2020-10-29 09:57:35,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:35,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77935270] [2020-10-29 09:57:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:40,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:57:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:57:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:40,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:40,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:40,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:40,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:40,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:57:40,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:40,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:40,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:40,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:40,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:40,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:40,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:40,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1818 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:57:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:57:42,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77935270] [2020-10-29 09:57:42,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:42,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:57:42,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754429784] [2020-10-29 09:57:42,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:57:42,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:42,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:57:42,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:57:42,078 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 10 states. [2020-10-29 09:57:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:42,826 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-10-29 09:57:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:57:42,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-29 09:57:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:42,829 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:57:42,829 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:57:42,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:57:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:57:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-10-29 09:57:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 09:57:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-29 09:57:42,842 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 41 [2020-10-29 09:57:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:42,842 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-29 09:57:42,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:57:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-29 09:57:42,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:57:42,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:42,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:42,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:57:42,844 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash -255182513, now seen corresponding path program 6 times [2020-10-29 09:57:42,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:42,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290195026] [2020-10-29 09:57:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:57:47,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:57:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:47,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:57:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:57:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:57:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:47,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:57:51,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:57:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3360 [2020-10-29 09:57:51,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:51,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:57:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:57:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:57:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:57:51,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290195026] [2020-10-29 09:57:51,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:51,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:57:51,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162711461] [2020-10-29 09:57:51,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:57:51,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:51,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:57:51,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:57:51,372 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 10 states. [2020-10-29 09:57:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:52,112 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2020-10-29 09:57:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:57:52,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-29 09:57:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:52,114 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:57:52,114 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:57:52,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:57:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:57:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-10-29 09:57:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:57:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-29 09:57:52,127 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 44 [2020-10-29 09:57:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:52,128 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-29 09:57:52,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:57:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-29 09:57:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:57:52,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:52,129 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:52,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:57:52,129 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash -370723485, now seen corresponding path program 7 times [2020-10-29 09:57:52,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:52,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975718039] [2020-10-29 09:57:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:57:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:57:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:57,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:57,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:57:57,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:57,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:57,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:57:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:00,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:58:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:58:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 09:58:00,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975718039] [2020-10-29 09:58:00,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:00,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:58:00,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635504595] [2020-10-29 09:58:00,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:58:00,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:58:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:58:00,127 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 10 states. [2020-10-29 09:58:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:00,759 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-29 09:58:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:58:00,760 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-29 09:58:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:00,761 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:58:00,761 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:58:00,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:58:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:58:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-29 09:58:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:58:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-29 09:58:00,776 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 47 [2020-10-29 09:58:00,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:00,776 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-29 09:58:00,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:58:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-29 09:58:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:58:00,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:00,780 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:00,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:58:00,781 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2028914529, now seen corresponding path program 8 times [2020-10-29 09:58:00,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:00,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050700393] [2020-10-29 09:58:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:58:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:58:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:58:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:58:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:58:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:58:10,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050700393] [2020-10-29 09:58:10,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:10,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:58:10,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215149383] [2020-10-29 09:58:10,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:58:10,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:58:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:58:10,923 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 10 states. [2020-10-29 09:58:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:11,507 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2020-10-29 09:58:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:58:11,508 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-29 09:58:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:11,510 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:58:11,510 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 09:58:11,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:58:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 09:58:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-29 09:58:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 09:58:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-29 09:58:11,521 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 50 [2020-10-29 09:58:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:11,521 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-29 09:58:11,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:58:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-29 09:58:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:58:11,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:11,522 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:11,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:58:11,523 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:11,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:11,523 INFO L82 PathProgramCache]: Analyzing trace with hash 148541751, now seen corresponding path program 9 times [2020-10-29 09:58:11,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:11,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670181768] [2020-10-29 09:58:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:58:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:16,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:58:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:21,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:21,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:58:21,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:58:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:58:21,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:21,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:58:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:58:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:58:21,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670181768] [2020-10-29 09:58:21,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:21,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:58:21,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283963964] [2020-10-29 09:58:21,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:58:21,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:21,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:58:21,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:21,682 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 11 states. [2020-10-29 09:58:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:22,501 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2020-10-29 09:58:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:58:22,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-29 09:58:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:22,503 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:58:22,503 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:58:22,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:58:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:58:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-10-29 09:58:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:58:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-29 09:58:22,517 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 54 [2020-10-29 09:58:22,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:22,518 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-29 09:58:22,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:58:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-29 09:58:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:58:22,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:22,519 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:22,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:58:22,519 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash 63244459, now seen corresponding path program 10 times [2020-10-29 09:58:22,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:22,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129588676] [2020-10-29 09:58:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:27,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:58:27,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:58:27,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:58:27,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:27,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:58:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:27,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:27,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:58:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:27,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:58:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:27,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:28,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:58:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 09:58:32,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129588676] [2020-10-29 09:58:32,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:32,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:58:32,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925309563] [2020-10-29 09:58:32,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:58:32,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:32,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:58:32,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:32,698 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 11 states. [2020-10-29 09:58:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:33,508 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2020-10-29 09:58:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:58:33,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-29 09:58:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:33,510 INFO L225 Difference]: With dead ends: 104 [2020-10-29 09:58:33,510 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 09:58:33,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:58:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 09:58:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-10-29 09:58:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 09:58:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-10-29 09:58:33,532 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 57 [2020-10-29 09:58:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:33,532 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-10-29 09:58:33,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:58:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-10-29 09:58:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:58:33,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:33,536 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:33,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:58:33,536 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:33,537 INFO L82 PathProgramCache]: Analyzing trace with hash 875430583, now seen corresponding path program 11 times [2020-10-29 09:58:33,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:33,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951587687] [2020-10-29 09:58:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:58:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:58:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:58:43,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:58:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:58:43,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:58:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:58:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 09:58:43,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951587687] [2020-10-29 09:58:43,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:43,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:58:43,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275277466] [2020-10-29 09:58:43,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:58:43,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:43,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:58:43,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:43,721 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 11 states. [2020-10-29 09:58:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:44,643 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2020-10-29 09:58:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:58:44,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-29 09:58:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:44,645 INFO L225 Difference]: With dead ends: 98 [2020-10-29 09:58:44,645 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:58:44,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:58:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:58:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-29 09:58:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:58:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-10-29 09:58:44,666 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 60 [2020-10-29 09:58:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:44,667 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-10-29 09:58:44,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:58:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-10-29 09:58:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:58:44,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:44,668 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:44,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:58:44,669 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:44,673 INFO L82 PathProgramCache]: Analyzing trace with hash 590484219, now seen corresponding path program 12 times [2020-10-29 09:58:44,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:44,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213446624] [2020-10-29 09:58:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:58:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:49,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:58:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:54,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 09:58:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 09:58:54,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213446624] [2020-10-29 09:58:54,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:54,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:58:54,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078969728] [2020-10-29 09:58:54,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:58:54,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:54,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:58:54,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:54,845 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 11 states. [2020-10-29 09:58:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:55,559 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2020-10-29 09:58:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:58:55,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-29 09:58:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:55,562 INFO L225 Difference]: With dead ends: 97 [2020-10-29 09:58:55,562 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 09:58:55,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:58:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 09:58:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2020-10-29 09:58:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 09:58:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-29 09:58:55,572 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 63 [2020-10-29 09:58:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:55,572 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-29 09:58:55,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:58:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-29 09:58:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 09:58:55,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:55,573 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:55,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:58:55,573 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1710301805, now seen corresponding path program 13 times [2020-10-29 09:58:55,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:55,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628293487] [2020-10-29 09:58:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:00,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:59:00,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:59:00,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:59:00,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:00,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:59:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:59:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:59:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:00,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:00,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:00,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:00,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:59:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:59:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 09:59:05,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:59:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:59:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:59:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 95 proven. 74 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 09:59:05,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628293487] [2020-10-29 09:59:05,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:05,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:59:05,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096602337] [2020-10-29 09:59:05,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:59:05,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:59:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:59:05,798 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 13 states. [2020-10-29 09:59:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:07,388 INFO L93 Difference]: Finished difference Result 237 states and 319 transitions. [2020-10-29 09:59:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:59:07,389 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-29 09:59:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:07,392 INFO L225 Difference]: With dead ends: 237 [2020-10-29 09:59:07,393 INFO L226 Difference]: Without dead ends: 183 [2020-10-29 09:59:07,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:59:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-29 09:59:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 162. [2020-10-29 09:59:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 09:59:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2020-10-29 09:59:07,437 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 67 [2020-10-29 09:59:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:07,438 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2020-10-29 09:59:07,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:59:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2020-10-29 09:59:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:59:07,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:07,445 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:07,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:59:07,445 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1124930865, now seen corresponding path program 14 times [2020-10-29 09:59:07,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:07,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786101624] [2020-10-29 09:59:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:07,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:07,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:07,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:07,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:07,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:59:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 09:59:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:07,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 09:59:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-29 09:59:07,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786101624] [2020-10-29 09:59:07,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:07,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:59:07,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787507923] [2020-10-29 09:59:07,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:59:07,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:59:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:59:07,677 INFO L87 Difference]: Start difference. First operand 162 states and 217 transitions. Second operand 5 states. [2020-10-29 09:59:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:07,863 INFO L93 Difference]: Finished difference Result 318 states and 428 transitions. [2020-10-29 09:59:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:59:07,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 09:59:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:07,865 INFO L225 Difference]: With dead ends: 318 [2020-10-29 09:59:07,865 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 09:59:07,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:59:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 09:59:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-29 09:59:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 09:59:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 218 transitions. [2020-10-29 09:59:07,894 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 218 transitions. Word has length 70 [2020-10-29 09:59:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:07,894 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 218 transitions. [2020-10-29 09:59:07,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:59:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 218 transitions. [2020-10-29 09:59:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:59:07,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:07,896 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 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 09:59:07,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:59:07,896 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1436777201, now seen corresponding path program 1 times [2020-10-29 09:59:07,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:07,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593793502] [2020-10-29 09:59:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:09,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 09:59:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:09,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:09,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:09,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:59:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:09,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:09,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:59:09,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-29 09:59:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:09,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:59:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:59:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:59:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-29 09:59:10,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593793502] [2020-10-29 09:59:10,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:10,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 09:59:10,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447846931] [2020-10-29 09:59:10,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:59:10,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:10,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:59:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:59:10,432 INFO L87 Difference]: Start difference. First operand 163 states and 218 transitions. Second operand 12 states. [2020-10-29 09:59:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:11,097 INFO L93 Difference]: Finished difference Result 392 states and 534 transitions. [2020-10-29 09:59:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:59:11,098 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-29 09:59:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:11,100 INFO L225 Difference]: With dead ends: 392 [2020-10-29 09:59:11,101 INFO L226 Difference]: Without dead ends: 388 [2020-10-29 09:59:11,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:59:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-29 09:59:11,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 306. [2020-10-29 09:59:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 09:59:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 414 transitions. [2020-10-29 09:59:11,146 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 414 transitions. Word has length 72 [2020-10-29 09:59:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:11,147 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 414 transitions. [2020-10-29 09:59:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:59:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 414 transitions. [2020-10-29 09:59:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:59:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:11,148 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 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 09:59:11,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:59:11,148 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2040541645, now seen corresponding path program 1 times [2020-10-29 09:59:11,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:11,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096442937] [2020-10-29 09:59:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:16,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:16,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:59:16,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:59:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 09:59:16,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:16,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:59:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:59:16,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:16,830 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 32 [2020-10-29 09:59:17,179 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 29 [2020-10-29 09:59:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:59:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:22,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:59:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 09:59:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:59:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:22,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:59:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:59:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:59:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:22,621 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2020-10-29 09:59:22,850 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-10-29 09:59:23,058 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2020-10-29 09:59:23,331 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2020-10-29 09:59:23,552 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2020-10-29 09:59:23,705 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-29 09:59:23,900 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2020-10-29 09:59:24,101 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-10-29 09:59:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 09:59:24,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096442937] [2020-10-29 09:59:24,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:24,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:59:24,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441497153] [2020-10-29 09:59:24,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:59:24,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:24,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:59:24,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:59:24,276 INFO L87 Difference]: Start difference. First operand 306 states and 414 transitions. Second operand 17 states. [2020-10-29 09:59:25,237 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-29 09:59:26,378 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-29 09:59:26,737 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2020-10-29 09:59:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:27,574 INFO L93 Difference]: Finished difference Result 419 states and 570 transitions. [2020-10-29 09:59:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:59:27,575 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-10-29 09:59:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:27,578 INFO L225 Difference]: With dead ends: 419 [2020-10-29 09:59:27,578 INFO L226 Difference]: Without dead ends: 406 [2020-10-29 09:59:27,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:59:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-29 09:59:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 377. [2020-10-29 09:59:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-29 09:59:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 518 transitions. [2020-10-29 09:59:27,646 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 518 transitions. Word has length 72 [2020-10-29 09:59:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:27,647 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 518 transitions. [2020-10-29 09:59:27,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:59:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 518 transitions. [2020-10-29 09:59:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:59:27,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:27,650 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 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 09:59:27,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:59:27,650 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:27,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:27,651 INFO L82 PathProgramCache]: Analyzing trace with hash -486450833, now seen corresponding path program 2 times [2020-10-29 09:59:27,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:27,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199285371] [2020-10-29 09:59:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:59:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 09:59:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:59:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:59:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 09:59:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,879 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-10-29 09:59:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:59:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:33,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:33,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:59:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:38,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:59:38,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:59:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:59:38,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:38,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:59:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:59:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:59:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:38,490 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-10-29 09:59:38,634 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-29 09:59:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-29 09:59:39,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199285371] [2020-10-29 09:59:39,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:39,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:59:39,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33992112] [2020-10-29 09:59:39,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:59:39,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:39,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:59:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:59:39,221 INFO L87 Difference]: Start difference. First operand 377 states and 518 transitions. Second operand 16 states. [2020-10-29 09:59:40,671 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-29 09:59:40,933 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-29 09:59:41,244 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-29 09:59:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:42,041 INFO L93 Difference]: Finished difference Result 591 states and 815 transitions. [2020-10-29 09:59:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:59:42,042 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-10-29 09:59:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:42,046 INFO L225 Difference]: With dead ends: 591 [2020-10-29 09:59:42,046 INFO L226 Difference]: Without dead ends: 578 [2020-10-29 09:59:42,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:59:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-29 09:59:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 410. [2020-10-29 09:59:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-29 09:59:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 564 transitions. [2020-10-29 09:59:42,133 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 564 transitions. Word has length 72 [2020-10-29 09:59:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:42,133 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 564 transitions. [2020-10-29 09:59:42,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:59:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 564 transitions. [2020-10-29 09:59:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:59:42,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:42,135 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 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 09:59:42,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:59:42,136 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1414144947, now seen corresponding path program 3 times [2020-10-29 09:59:42,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:42,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325771758] [2020-10-29 09:59:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:42,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:43,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:59:47,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:59:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:47,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:47,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:47,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:59:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:52,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:59:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:52,770 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-29 09:59:52,898 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-10-29 09:59:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 09:59:53,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325771758] [2020-10-29 09:59:53,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:53,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:59:53,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751272790] [2020-10-29 09:59:53,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:59:53,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:53,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:59:53,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:59:53,357 INFO L87 Difference]: Start difference. First operand 410 states and 564 transitions. Second operand 15 states. [2020-10-29 09:59:54,584 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-29 09:59:54,832 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-29 09:59:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:55,516 INFO L93 Difference]: Finished difference Result 614 states and 848 transitions. [2020-10-29 09:59:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:59:55,517 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-29 09:59:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:55,521 INFO L225 Difference]: With dead ends: 614 [2020-10-29 09:59:55,521 INFO L226 Difference]: Without dead ends: 601 [2020-10-29 09:59:55,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:59:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-29 09:59:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 410. [2020-10-29 09:59:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-29 09:59:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 564 transitions. [2020-10-29 09:59:55,603 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 564 transitions. Word has length 72 [2020-10-29 09:59:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:55,603 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 564 transitions. [2020-10-29 09:59:55,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:59:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 564 transitions. [2020-10-29 09:59:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:59:55,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:55,606 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 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 09:59:55,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:59:55,606 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash 777245679, now seen corresponding path program 4 times [2020-10-29 09:59:55,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:55,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102121367] [2020-10-29 09:59:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:00,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 10:00:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:01,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:01,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:00:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:01,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:00:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:00:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:00:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:00:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 10:00:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:06,365 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-29 10:00:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 158 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 10:00:06,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102121367] [2020-10-29 10:00:06,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:06,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:00:06,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075415648] [2020-10-29 10:00:06,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:00:06,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:06,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:00:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:00:06,895 INFO L87 Difference]: Start difference. First operand 410 states and 564 transitions. Second operand 16 states. [2020-10-29 10:00:07,929 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-29 10:00:08,136 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-29 10:00:08,347 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-29 10:00:08,602 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-29 10:00:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:09,292 INFO L93 Difference]: Finished difference Result 679 states and 936 transitions. [2020-10-29 10:00:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 10:00:09,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-10-29 10:00:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:09,297 INFO L225 Difference]: With dead ends: 679 [2020-10-29 10:00:09,297 INFO L226 Difference]: Without dead ends: 666 [2020-10-29 10:00:09,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2020-10-29 10:00:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-29 10:00:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 436. [2020-10-29 10:00:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-29 10:00:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 600 transitions. [2020-10-29 10:00:09,392 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 600 transitions. Word has length 72 [2020-10-29 10:00:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:09,393 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 600 transitions. [2020-10-29 10:00:09,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:00:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 600 transitions. [2020-10-29 10:00:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 10:00:09,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:09,395 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 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 10:00:09,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 10:00:09,395 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1486382797, now seen corresponding path program 5 times [2020-10-29 10:00:09,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:09,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479342491] [2020-10-29 10:00:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 10:00:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:14,715 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-29 10:00:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:14,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:14,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:00:14,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:14,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:00:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:00:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:20,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 10:00:20,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 10:00:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 10:00:20,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:20,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 10:00:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:00:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 10:00:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0