/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/float-benchs/zonotope_3.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:05:18,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:05:18,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:05:18,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:05:18,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:05:18,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:05:18,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:05:18,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:05:18,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:05:18,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:05:18,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:05:18,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:05:18,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:05:18,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:05:18,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:05:18,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:05:18,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:05:18,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:05:18,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:05:18,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:05:18,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:05:18,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:05:18,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:05:18,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:05:18,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:05:18,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:05:18,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:05:18,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:05:18,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:05:18,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:05:18,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:05:18,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:05:18,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:05:18,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:05:18,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:05:18,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:05:18,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:05:18,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:05:18,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:05:18,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:05:18,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:05:18,970 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 09:05:19,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:05:19,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:05:19,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:05:19,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:05:19,032 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:05:19,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:05:19,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:05:19,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:05:19,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:05:19,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:05:19,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:05:19,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:05:19,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:05:19,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:05:19,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:05:19,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:05:19,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:05:19,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:05:19,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:05:19,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:05:19,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:05:19,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:05:19,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:05:19,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:05:19,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:05:19,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:05:19,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:05:19,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:05:19,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:05:19,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:05:19,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:05:19,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:05:19,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:05:19,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:05:19,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:05:19,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c [2020-10-29 09:05:19,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72ce07d7/46cb0d38a3ae421f83dc7fdf96e1f26a/FLAGcaff9eea7 [2020-10-29 09:05:20,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:05:20,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c [2020-10-29 09:05:20,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72ce07d7/46cb0d38a3ae421f83dc7fdf96e1f26a/FLAGcaff9eea7 [2020-10-29 09:05:20,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72ce07d7/46cb0d38a3ae421f83dc7fdf96e1f26a [2020-10-29 09:05:20,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:05:20,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:05:20,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:05:20,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:05:20,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:05:20,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:05:20" (1/1) ... [2020-10-29 09:05:20,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b86dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:20, skipping insertion in model container [2020-10-29 09:05:20,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:05:20" (1/1) ... [2020-10-29 09:05:20,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:05:20,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:05:20,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:05:20,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:05:21,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:05:21,028 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:05:21,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21 WrapperNode [2020-10-29 09:05:21,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:05:21,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:05:21,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:05:21,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:05:21,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (1/1) ... [2020-10-29 09:05:21,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:05:21,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:05:21,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:05:21,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:05:21,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (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 09:05:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:05:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:05:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:05:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:05:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:05:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:05:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:05:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:05:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:05:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:05:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:05:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:05:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-29 09:05:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-29 09:05:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:05:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:05:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:05:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:05:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:05:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:05:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:05:21,494 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:05:21,494 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:05:21,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:05:21 BoogieIcfgContainer [2020-10-29 09:05:21,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:05:21,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:05:21,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:05:21,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:05:21,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:05:20" (1/3) ... [2020-10-29 09:05:21,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587a74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:05:21, skipping insertion in model container [2020-10-29 09:05:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:21" (2/3) ... [2020-10-29 09:05:21,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587a74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:05:21, skipping insertion in model container [2020-10-29 09:05:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:05:21" (3/3) ... [2020-10-29 09:05:21,508 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2020-10-29 09:05:21,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:05:21,529 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:05:21,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:05:21,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:05:21,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:05:21,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:05:21,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:05:21,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:05:21,578 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:05:21,578 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:05:21,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:05:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-29 09:05:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:05:21,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:21,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:21,604 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash -531864736, now seen corresponding path program 1 times [2020-10-29 09:05:21,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:21,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526350962] [2020-10-29 09:05:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:22,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:22,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:05:22,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:05:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-29 09:05:22,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:22,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:05:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:05:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:05:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:05:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:05:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:22,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:22,610 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 09:05:22,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526350962] [2020-10-29 09:05:22,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:05:22,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:05:22,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524295034] [2020-10-29 09:05:22,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:05:22,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:05:22,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:05:22,638 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2020-10-29 09:05:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:22,751 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-10-29 09:05:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:05:22,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-29 09:05:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:22,762 INFO L225 Difference]: With dead ends: 37 [2020-10-29 09:05:22,762 INFO L226 Difference]: Without dead ends: 19 [2020-10-29 09:05:22,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:05:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-29 09:05:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-29 09:05:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 09:05:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-29 09:05:22,808 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2020-10-29 09:05:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:22,808 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-29 09:05:22,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:05:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-10-29 09:05:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:05:22,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:22,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:22,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:05:22,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:22,812 INFO L82 PathProgramCache]: Analyzing trace with hash -63639589, now seen corresponding path program 1 times [2020-10-29 09:05:22,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:22,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918379760] [2020-10-29 09:05:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:22,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:05:22,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:05:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:22,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:05:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:05:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:22,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:05:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:23,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:05:23,032 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 09:05:23,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918379760] [2020-10-29 09:05:23,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:05:23,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:05:23,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325013540] [2020-10-29 09:05:23,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:05:23,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:23,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:05:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:05:23,045 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2020-10-29 09:05:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:23,132 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-10-29 09:05:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:05:23,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-29 09:05:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:23,134 INFO L225 Difference]: With dead ends: 32 [2020-10-29 09:05:23,135 INFO L226 Difference]: Without dead ends: 24 [2020-10-29 09:05:23,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:05:23,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-29 09:05:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-10-29 09:05:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 09:05:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-29 09:05:23,151 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2020-10-29 09:05:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:23,152 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-29 09:05:23,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:05:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-29 09:05:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:05:23,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:23,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:23,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:05:23,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:23,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2130316911, now seen corresponding path program 1 times [2020-10-29 09:05:23,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:23,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793103073] [2020-10-29 09:05:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:05:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:05:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 09:05:23,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:23,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:05:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:05:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:23,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:23,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:05:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:23,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:23,477 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 09:05:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793103073] [2020-10-29 09:05:23,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:23,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:05:23,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668877884] [2020-10-29 09:05:23,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:05:23,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:05:23,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:05:23,481 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-29 09:05:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:23,544 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-10-29 09:05:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:05:23,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-29 09:05:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:23,546 INFO L225 Difference]: With dead ends: 37 [2020-10-29 09:05:23,546 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:05:23,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:05:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:05:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-29 09:05:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 09:05:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-10-29 09:05:23,554 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 17 [2020-10-29 09:05:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:23,554 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-10-29 09:05:23,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:05:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-10-29 09:05:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:05:23,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:23,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:23,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:05:23,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:23,557 INFO L82 PathProgramCache]: Analyzing trace with hash -970603773, now seen corresponding path program 2 times [2020-10-29 09:05:23,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:23,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641208713] [2020-10-29 09:05:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:05:23,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:05:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 09:05:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:23,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:05:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:05:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:23,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:05:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:23,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:23,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641208713] [2020-10-29 09:05:23,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:23,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:05:23,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750595310] [2020-10-29 09:05:23,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:05:23,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:05:23,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:05:23,953 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 6 states. [2020-10-29 09:05:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:24,017 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-10-29 09:05:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:05:24,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-29 09:05:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:24,019 INFO L225 Difference]: With dead ends: 42 [2020-10-29 09:05:24,019 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 09:05:24,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:05:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 09:05:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-10-29 09:05:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 09:05:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-29 09:05:24,027 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 21 [2020-10-29 09:05:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:24,027 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-29 09:05:24,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:05:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-29 09:05:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:05:24,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:24,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:24,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:05:24,029 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:24,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1887243671, now seen corresponding path program 3 times [2020-10-29 09:05:24,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:24,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51088449] [2020-10-29 09:05:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:05:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:05:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-29 09:05:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:24,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:05:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:05:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:05:24,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:24,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:24,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51088449] [2020-10-29 09:05:24,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:24,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:05:24,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950197022] [2020-10-29 09:05:24,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:05:24,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:24,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:05:24,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:05:24,549 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-10-29 09:05:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:24,615 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-10-29 09:05:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:05:24,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-29 09:05:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:24,617 INFO L225 Difference]: With dead ends: 47 [2020-10-29 09:05:24,617 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:05:24,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:05:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:05:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-29 09:05:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 09:05:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-10-29 09:05:24,625 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 25 [2020-10-29 09:05:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:24,625 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-10-29 09:05:24,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:05:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2020-10-29 09:05:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:05:24,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:24,627 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:24,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:05:24,627 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:24,628 INFO L82 PathProgramCache]: Analyzing trace with hash 843378219, now seen corresponding path program 4 times [2020-10-29 09:05:24,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:24,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608044899] [2020-10-29 09:05:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:05:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:05:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-29 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:25,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:25,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:05:25,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:25,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:25,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:25,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608044899] [2020-10-29 09:05:25,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:25,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:05:25,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513900478] [2020-10-29 09:05:25,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:05:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:05:25,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:05:25,359 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 8 states. [2020-10-29 09:05:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:25,428 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-10-29 09:05:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:05:25,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-29 09:05:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:25,429 INFO L225 Difference]: With dead ends: 52 [2020-10-29 09:05:25,430 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 09:05:25,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:05:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 09:05:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-29 09:05:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:05:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-29 09:05:25,437 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 29 [2020-10-29 09:05:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:25,437 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-29 09:05:25,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:05:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-29 09:05:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:05:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:25,439 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:25,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:05:25,439 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash 356672703, now seen corresponding path program 5 times [2020-10-29 09:05:25,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:25,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507600400] [2020-10-29 09:05:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:26,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:05:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:05:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:26,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:26,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:26,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:05:26,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:26,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:26,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507600400] [2020-10-29 09:05:26,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:26,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:05:26,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006738283] [2020-10-29 09:05:26,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:05:26,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:26,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:05:26,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:05:26,707 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 9 states. [2020-10-29 09:05:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:26,795 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-10-29 09:05:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:05:26,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-29 09:05:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:26,797 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:05:26,797 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 09:05:26,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:05:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 09:05:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-29 09:05:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:05:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2020-10-29 09:05:26,805 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2020-10-29 09:05:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:26,805 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2020-10-29 09:05:26,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:05:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2020-10-29 09:05:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:05:26,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:26,806 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:26,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:05:26,807 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:26,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1195740845, now seen corresponding path program 6 times [2020-10-29 09:05:26,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:26,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850170851] [2020-10-29 09:05:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:05:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:05:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-29 09:05:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:05:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:05:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:28,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:28,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:05:28,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:28,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:28,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850170851] [2020-10-29 09:05:28,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:28,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:05:28,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690544697] [2020-10-29 09:05:28,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:05:28,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:28,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:05:28,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:05:28,826 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand 10 states. [2020-10-29 09:05:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:28,920 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2020-10-29 09:05:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:05:28,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-29 09:05:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:28,922 INFO L225 Difference]: With dead ends: 62 [2020-10-29 09:05:28,923 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 09:05:28,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:05:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 09:05:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-29 09:05:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 09:05:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2020-10-29 09:05:28,934 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 37 [2020-10-29 09:05:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:28,936 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2020-10-29 09:05:28,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:05:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2020-10-29 09:05:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:05:28,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:28,939 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:28,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:05:28,939 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:28,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1854794777, now seen corresponding path program 7 times [2020-10-29 09:05:28,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:28,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300507483] [2020-10-29 09:05:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:28,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:05:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:05:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3510 [2020-10-29 09:05:32,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:32,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:05:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:05:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:32,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:32,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:32,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:05:32,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:32,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:05:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:32,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300507483] [2020-10-29 09:05:32,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:32,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:05:32,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473459356] [2020-10-29 09:05:32,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:05:32,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:32,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:05:32,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:05:32,692 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand 11 states. [2020-10-29 09:05:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:32,801 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-29 09:05:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:05:32,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-29 09:05:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:32,802 INFO L225 Difference]: With dead ends: 67 [2020-10-29 09:05:32,802 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:05:32,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:05:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:05:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-29 09:05:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:05:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2020-10-29 09:05:32,817 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 41 [2020-10-29 09:05:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:32,817 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2020-10-29 09:05:32,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:05:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2020-10-29 09:05:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:05:32,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:32,821 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:32,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:05:32,822 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash 699288699, now seen corresponding path program 8 times [2020-10-29 09:05:32,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:32,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506052620] [2020-10-29 09:05:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:35,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:37,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:37,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:05:37,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:05:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:05:37,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:37,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:05:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:05:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:38,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:38,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:05:38,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:38,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:05:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:38,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506052620] [2020-10-29 09:05:38,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:38,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:05:38,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232802777] [2020-10-29 09:05:38,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:05:38,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:38,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:05:38,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:05:38,065 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand 12 states. [2020-10-29 09:05:38,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:38,157 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-10-29 09:05:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:05:38,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-29 09:05:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:38,159 INFO L225 Difference]: With dead ends: 72 [2020-10-29 09:05:38,159 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:05:38,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:05:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:05:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-10-29 09:05:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:05:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2020-10-29 09:05:38,177 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 45 [2020-10-29 09:05:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:38,177 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2020-10-29 09:05:38,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:05:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2020-10-29 09:05:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:05:38,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:38,179 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:38,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:05:38,179 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1630804751, now seen corresponding path program 9 times [2020-10-29 09:05:38,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:38,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697490728] [2020-10-29 09:05:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:43,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:05:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:05:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:05:43,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:43,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:05:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:05:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:05:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:43,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:43,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:43,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:05:43,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:43,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:43,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697490728] [2020-10-29 09:05:43,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:43,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:05:43,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392191652] [2020-10-29 09:05:43,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:05:43,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:43,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:05:43,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:05:43,451 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand 13 states. [2020-10-29 09:05:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:43,574 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2020-10-29 09:05:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:05:43,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-29 09:05:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:43,576 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:05:43,576 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 09:05:43,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:05:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 09:05:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-29 09:05:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:05:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2020-10-29 09:05:43,589 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 49 [2020-10-29 09:05:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:43,590 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2020-10-29 09:05:43,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:05:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2020-10-29 09:05:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:05:43,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:43,591 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:43,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:05:43,591 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:43,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1387757661, now seen corresponding path program 10 times [2020-10-29 09:05:43,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:43,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027878151] [2020-10-29 09:05:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:05:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:05:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:05:48,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:48,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:05:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:05:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:48,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:05:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:48,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:48,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027878151] [2020-10-29 09:05:48,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:48,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:05:48,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695597596] [2020-10-29 09:05:48,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:05:48,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:48,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:05:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:05:48,851 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand 14 states. [2020-10-29 09:05:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:48,971 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2020-10-29 09:05:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:05:48,972 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-29 09:05:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:48,973 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:05:48,973 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:05:48,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:05:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:05:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-10-29 09:05:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 09:05:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2020-10-29 09:05:48,995 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 53 [2020-10-29 09:05:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:48,995 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2020-10-29 09:05:48,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:05:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2020-10-29 09:05:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:05:48,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:48,996 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:48,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:05:48,997 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:48,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1487960631, now seen corresponding path program 11 times [2020-10-29 09:05:48,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:48,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598302893] [2020-10-29 09:05:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:49,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:54,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:54,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 09:05:54,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:05:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:05:54,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:54,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:05:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 09:05:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:05:54,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:54,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:54,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:54,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:05:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:54,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-29 09:05:54,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598302893] [2020-10-29 09:05:54,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:05:54,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:05:54,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896953011] [2020-10-29 09:05:54,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:05:54,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:54,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:05:54,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:05:54,112 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand 4 states. [2020-10-29 09:05:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:54,174 INFO L93 Difference]: Finished difference Result 140 states and 184 transitions. [2020-10-29 09:05:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:05:54,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-29 09:05:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:54,175 INFO L225 Difference]: With dead ends: 140 [2020-10-29 09:05:54,176 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:05:54,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:05:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:05:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-29 09:05:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:05:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-29 09:05:54,186 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 57 [2020-10-29 09:05:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:54,186 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-29 09:05:54,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:05:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-29 09:05:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:05:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:54,188 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:54,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:05:54,188 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:54,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:54,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2116510034, now seen corresponding path program 1 times [2020-10-29 09:05:54,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:54,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719475564] [2020-10-29 09:05:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:54,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:54,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 09:05:54,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:54,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-29 09:05:54,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:54,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:05:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:05:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:54,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:05:54,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:54,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:54,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719475564] [2020-10-29 09:05:54,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:54,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:05:54,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353291912] [2020-10-29 09:05:54,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:05:54,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:05:54,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:05:54,835 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 15 states. [2020-10-29 09:05:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:54,934 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-29 09:05:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:05:54,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-29 09:05:54,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:54,936 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:05:54,936 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:05:54,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:05:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:05:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-29 09:05:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:05:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-10-29 09:05:54,942 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57 [2020-10-29 09:05:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:54,942 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-10-29 09:05:54,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:05:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-10-29 09:05:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:05:54,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:54,943 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:54,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:05:54,943 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:54,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2008546041, now seen corresponding path program 2 times [2020-10-29 09:05:54,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:54,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036023945] [2020-10-29 09:05:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:55,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:05:55,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-29 09:05:55,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:55,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:05:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:05:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:55,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:05:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:55,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:55,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036023945] [2020-10-29 09:05:55,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:55,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:05:55,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789721696] [2020-10-29 09:05:55,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:05:55,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:55,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:05:55,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:05:55,613 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 16 states. [2020-10-29 09:05:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:55,721 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-10-29 09:05:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:05:55,721 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-29 09:05:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:55,722 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:05:55,722 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:05:55,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:05:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:05:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-10-29 09:05:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:05:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-29 09:05:55,728 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2020-10-29 09:05:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:55,728 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-29 09:05:55,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:05:55,728 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-29 09:05:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 09:05:55,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:55,729 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:55,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:05:55,729 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:55,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1635423968, now seen corresponding path program 3 times [2020-10-29 09:05:55,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:55,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103801548] [2020-10-29 09:05:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:56,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:56,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:05:56,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-29 09:05:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:56,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:05:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:05:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:05:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:05:56,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:56,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:56,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103801548] [2020-10-29 09:05:56,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:56,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:05:56,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622196957] [2020-10-29 09:05:56,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:05:56,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:56,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:05:56,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:05:56,420 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 17 states. [2020-10-29 09:05:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:56,549 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-29 09:05:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:05:56,551 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-29 09:05:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:56,552 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:05:56,552 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:05:56,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:05:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:05:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-29 09:05:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:05:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-29 09:05:56,559 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2020-10-29 09:05:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:56,560 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-29 09:05:56,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:05:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-29 09:05:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 09:05:56,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:56,562 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:56,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:05:56,562 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:56,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1492030521, now seen corresponding path program 4 times [2020-10-29 09:05:56,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:56,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000846582] [2020-10-29 09:05:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:56,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:56,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 09:05:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 09:05:56,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:56,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:05:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:05:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:57,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:57,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:05:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:57,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:57,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000846582] [2020-10-29 09:05:57,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:57,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:05:57,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192994958] [2020-10-29 09:05:57,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:05:57,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:57,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:05:57,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:05:57,305 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 18 states. [2020-10-29 09:05:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:57,460 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-10-29 09:05:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:05:57,461 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-10-29 09:05:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:57,463 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:05:57,463 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 09:05:57,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:05:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 09:05:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2020-10-29 09:05:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 09:05:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-10-29 09:05:57,469 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 69 [2020-10-29 09:05:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:57,470 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-10-29 09:05:57,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:05:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-10-29 09:05:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 09:05:57,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:57,471 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:57,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:05:57,471 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1359101202, now seen corresponding path program 5 times [2020-10-29 09:05:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:57,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421093586] [2020-10-29 09:05:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:57,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:05:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:05:58,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:58,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421093586] [2020-10-29 09:05:58,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:58,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:05:58,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398620490] [2020-10-29 09:05:58,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:05:58,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:05:58,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:05:58,196 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 19 states. [2020-10-29 09:05:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:58,333 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-29 09:05:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:05:58,333 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2020-10-29 09:05:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:58,334 INFO L225 Difference]: With dead ends: 90 [2020-10-29 09:05:58,334 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 09:05:58,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:05:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 09:05:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-29 09:05:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 09:05:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-29 09:05:58,341 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73 [2020-10-29 09:05:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:58,341 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-29 09:05:58,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:05:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-29 09:05:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 09:05:58,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:58,342 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:58,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:05:58,342 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:58,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1391710571, now seen corresponding path program 6 times [2020-10-29 09:05:58,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:58,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272512307] [2020-10-29 09:05:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:05:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-29 09:05:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:05:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 09:05:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:59,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:59,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:05:59,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:59,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:05:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:59,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272512307] [2020-10-29 09:05:59,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:05:59,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:05:59,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064741538] [2020-10-29 09:05:59,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:05:59,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:05:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:05:59,150 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 20 states. [2020-10-29 09:05:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:59,301 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-10-29 09:05:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:05:59,302 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2020-10-29 09:05:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:59,303 INFO L225 Difference]: With dead ends: 94 [2020-10-29 09:05:59,303 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 09:05:59,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:05:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 09:05:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-10-29 09:05:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 09:05:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-10-29 09:05:59,309 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 77 [2020-10-29 09:05:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:59,310 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-10-29 09:05:59,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:05:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-10-29 09:05:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 09:05:59,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:59,311 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:59,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:05:59,311 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash 518099268, now seen corresponding path program 7 times [2020-10-29 09:05:59,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:59,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541450096] [2020-10-29 09:05:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 09:05:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:00,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:00,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541450096] [2020-10-29 09:06:00,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:00,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:06:00,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606342494] [2020-10-29 09:06:00,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:06:00,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:00,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:06:00,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:06:00,161 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 21 states. [2020-10-29 09:06:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:00,324 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2020-10-29 09:06:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:06:00,325 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 81 [2020-10-29 09:06:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:00,326 INFO L225 Difference]: With dead ends: 98 [2020-10-29 09:06:00,327 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 09:06:00,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:06:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 09:06:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-29 09:06:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 09:06:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-10-29 09:06:00,333 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 81 [2020-10-29 09:06:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:00,334 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-10-29 09:06:00,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:06:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-10-29 09:06:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 09:06:00,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:00,335 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:00,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:06:00,336 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1144406883, now seen corresponding path program 8 times [2020-10-29 09:06:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078862557] [2020-10-29 09:06:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:00,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 09:06:00,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-29 09:06:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:06:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 09:06:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:01,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:01,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078862557] [2020-10-29 09:06:01,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:01,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:06:01,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541385826] [2020-10-29 09:06:01,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:06:01,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:01,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:06:01,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:06:01,268 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 22 states. [2020-10-29 09:06:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:01,448 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-10-29 09:06:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:06:01,448 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 85 [2020-10-29 09:06:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:01,449 INFO L225 Difference]: With dead ends: 102 [2020-10-29 09:06:01,449 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 09:06:01,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:06:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 09:06:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-29 09:06:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 09:06:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-29 09:06:01,461 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2020-10-29 09:06:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:01,461 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-29 09:06:01,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:06:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-29 09:06:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 09:06:01,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:01,462 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:01,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:06:01,463 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 126522230, now seen corresponding path program 9 times [2020-10-29 09:06:01,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:01,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119241320] [2020-10-29 09:06:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:01,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:01,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 09:06:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:02,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119241320] [2020-10-29 09:06:02,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:02,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:06:02,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580145681] [2020-10-29 09:06:02,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:06:02,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:02,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:06:02,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:06:02,422 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 23 states. [2020-10-29 09:06:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:02,572 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-29 09:06:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:06:02,573 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 89 [2020-10-29 09:06:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:02,574 INFO L225 Difference]: With dead ends: 106 [2020-10-29 09:06:02,574 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 09:06:02,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:06:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 09:06:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-10-29 09:06:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 09:06:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-29 09:06:02,585 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 89 [2020-10-29 09:06:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:02,585 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-29 09:06:02,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:06:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-29 09:06:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 09:06:02,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:02,586 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:02,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:06:02,587 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:02,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1189238223, now seen corresponding path program 10 times [2020-10-29 09:06:02,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:02,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480954349] [2020-10-29 09:06:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:03,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 09:06:03,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:03,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-29 09:06:03,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:03,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:06:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 09:06:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:03,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:03,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:03,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:03,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480954349] [2020-10-29 09:06:03,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:03,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:06:03,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189932916] [2020-10-29 09:06:03,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:06:03,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:03,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:06:03,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:06:03,679 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 24 states. [2020-10-29 09:06:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:03,862 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2020-10-29 09:06:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:06:03,864 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-10-29 09:06:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:03,865 INFO L225 Difference]: With dead ends: 110 [2020-10-29 09:06:03,865 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 09:06:03,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:06:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 09:06:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-10-29 09:06:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:06:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-10-29 09:06:03,872 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93 [2020-10-29 09:06:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:03,872 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-10-29 09:06:03,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:06:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-10-29 09:06:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 09:06:03,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:03,873 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:03,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:06:03,874 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1250999384, now seen corresponding path program 11 times [2020-10-29 09:06:03,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:03,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798672972] [2020-10-29 09:06:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:04,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 09:06:04,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 09:06:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:05,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:05,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:05,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:05,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:05,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:05,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:05,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798672972] [2020-10-29 09:06:05,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:05,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:06:05,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876665182] [2020-10-29 09:06:05,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:06:05,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:05,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:06:05,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:06:05,068 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 25 states. [2020-10-29 09:06:05,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:05,234 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-10-29 09:06:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:06:05,234 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2020-10-29 09:06:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:05,236 INFO L225 Difference]: With dead ends: 114 [2020-10-29 09:06:05,236 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 09:06:05,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:06:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 09:06:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-10-29 09:06:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 09:06:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-29 09:06:05,243 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2020-10-29 09:06:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:05,243 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-29 09:06:05,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:06:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-29 09:06:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 09:06:05,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:05,244 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:05,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:06:05,245 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash 363830529, now seen corresponding path program 12 times [2020-10-29 09:06:05,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:05,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125323034] [2020-10-29 09:06:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:05,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:05,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 09:06:05,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-29 09:06:05,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:05,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:06:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 09:06:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:06,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:06,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:06,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125323034] [2020-10-29 09:06:06,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:06,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 09:06:06,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019640850] [2020-10-29 09:06:06,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 09:06:06,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:06,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 09:06:06,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:06:06,413 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 26 states. [2020-10-29 09:06:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:06,592 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2020-10-29 09:06:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:06:06,592 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 101 [2020-10-29 09:06:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:06,593 INFO L225 Difference]: With dead ends: 118 [2020-10-29 09:06:06,593 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 09:06:06,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:06:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 09:06:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2020-10-29 09:06:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:06:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-10-29 09:06:06,600 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 101 [2020-10-29 09:06:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:06,601 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-10-29 09:06:06,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 09:06:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-10-29 09:06:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 09:06:06,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:06,604 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:06,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:06:06,604 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1090626010, now seen corresponding path program 13 times [2020-10-29 09:06:06,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:06,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809068699] [2020-10-29 09:06:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:07,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:06:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 09:06:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:07,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809068699] [2020-10-29 09:06:07,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:07,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:06:07,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564645829] [2020-10-29 09:06:07,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:06:07,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:07,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:06:07,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:06:07,795 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 27 states. [2020-10-29 09:06:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:07,965 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-10-29 09:06:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:06:07,966 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 105 [2020-10-29 09:06:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:07,967 INFO L225 Difference]: With dead ends: 122 [2020-10-29 09:06:07,967 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 09:06:07,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:06:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 09:06:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-29 09:06:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 09:06:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-10-29 09:06:07,975 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 105 [2020-10-29 09:06:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:07,976 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-10-29 09:06:07,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:06:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-10-29 09:06:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 09:06:07,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:07,977 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:07,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:06:07,978 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1214016973, now seen corresponding path program 14 times [2020-10-29 09:06:07,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:07,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998654327] [2020-10-29 09:06:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 09:06:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:09,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:09,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:09,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998654327] [2020-10-29 09:06:09,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:09,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:06:09,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369864528] [2020-10-29 09:06:09,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:06:09,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:09,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:06:09,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:06:09,264 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 28 states. [2020-10-29 09:06:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:09,424 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2020-10-29 09:06:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:06:09,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2020-10-29 09:06:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:09,426 INFO L225 Difference]: With dead ends: 126 [2020-10-29 09:06:09,426 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 09:06:09,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:06:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 09:06:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2020-10-29 09:06:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 09:06:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-29 09:06:09,433 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109 [2020-10-29 09:06:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:09,434 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-29 09:06:09,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:06:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-29 09:06:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 09:06:09,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:09,435 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:09,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:06:09,435 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash 817081868, now seen corresponding path program 15 times [2020-10-29 09:06:09,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:09,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166824601] [2020-10-29 09:06:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 09:06:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 09:06:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:10,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166824601] [2020-10-29 09:06:10,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:10,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 09:06:10,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334892746] [2020-10-29 09:06:10,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 09:06:10,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 09:06:10,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:06:10,982 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 29 states. [2020-10-29 09:06:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:11,177 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2020-10-29 09:06:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 09:06:11,178 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 113 [2020-10-29 09:06:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:11,179 INFO L225 Difference]: With dead ends: 130 [2020-10-29 09:06:11,180 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 09:06:11,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:06:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 09:06:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-10-29 09:06:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 09:06:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-10-29 09:06:11,187 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 113 [2020-10-29 09:06:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:11,188 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-10-29 09:06:11,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 09:06:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-10-29 09:06:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 09:06:11,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:11,189 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:11,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:06:11,190 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash 707802469, now seen corresponding path program 16 times [2020-10-29 09:06:11,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:11,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191847340] [2020-10-29 09:06:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:11,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 09:06:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:12,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:12,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191847340] [2020-10-29 09:06:12,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:12,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 09:06:12,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093958303] [2020-10-29 09:06:12,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 09:06:12,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:12,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 09:06:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:06:12,657 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 30 states. [2020-10-29 09:06:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:12,879 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-10-29 09:06:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:06:12,880 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 117 [2020-10-29 09:06:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:12,881 INFO L225 Difference]: With dead ends: 134 [2020-10-29 09:06:12,881 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 09:06:12,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:06:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 09:06:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2020-10-29 09:06:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 09:06:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-10-29 09:06:12,897 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 117 [2020-10-29 09:06:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:12,897 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-10-29 09:06:12,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 09:06:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-10-29 09:06:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 09:06:12,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:12,899 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:12,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:06:12,899 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:12,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2029479998, now seen corresponding path program 17 times [2020-10-29 09:06:12,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:12,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627988204] [2020-10-29 09:06:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 09:06:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-29 09:06:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:13,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 09:06:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 09:06:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:14,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:14,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:14,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:14,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:14,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627988204] [2020-10-29 09:06:14,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:14,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:06:14,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920388088] [2020-10-29 09:06:14,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:06:14,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:06:14,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:06:14,481 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 31 states. [2020-10-29 09:06:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:14,667 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2020-10-29 09:06:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 09:06:14,667 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 121 [2020-10-29 09:06:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:14,669 INFO L225 Difference]: With dead ends: 138 [2020-10-29 09:06:14,669 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 09:06:14,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:06:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 09:06:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2020-10-29 09:06:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 09:06:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-29 09:06:14,677 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 121 [2020-10-29 09:06:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:14,678 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-29 09:06:14,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 09:06:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-29 09:06:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 09:06:14,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:14,679 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:14,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 09:06:14,680 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -658012521, now seen corresponding path program 18 times [2020-10-29 09:06:14,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:14,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961840836] [2020-10-29 09:06:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 09:06:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 09:06:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:16,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961840836] [2020-10-29 09:06:16,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:16,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 09:06:16,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327262424] [2020-10-29 09:06:16,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 09:06:16,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 09:06:16,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:06:16,359 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 32 states. [2020-10-29 09:06:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:16,540 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-10-29 09:06:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 09:06:16,541 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 125 [2020-10-29 09:06:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:16,542 INFO L225 Difference]: With dead ends: 142 [2020-10-29 09:06:16,542 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 09:06:16,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:06:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 09:06:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-29 09:06:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 09:06:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-10-29 09:06:16,550 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125 [2020-10-29 09:06:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:16,550 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-10-29 09:06:16,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 09:06:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-10-29 09:06:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 09:06:16,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:16,552 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:16,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 09:06:16,552 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2084491376, now seen corresponding path program 19 times [2020-10-29 09:06:16,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:16,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992220947] [2020-10-29 09:06:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:17,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 09:06:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:18,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:18,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:18,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:18,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:18,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992220947] [2020-10-29 09:06:18,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:18,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 09:06:18,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543239385] [2020-10-29 09:06:18,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 09:06:18,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:18,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 09:06:18,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:06:18,319 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 33 states. [2020-10-29 09:06:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:18,476 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2020-10-29 09:06:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 09:06:18,477 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 129 [2020-10-29 09:06:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:18,478 INFO L225 Difference]: With dead ends: 146 [2020-10-29 09:06:18,478 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 09:06:18,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:06:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 09:06:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2020-10-29 09:06:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 09:06:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-10-29 09:06:18,485 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 129 [2020-10-29 09:06:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:18,486 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-10-29 09:06:18,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 09:06:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-10-29 09:06:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 09:06:18,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:18,487 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:18,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 09:06:18,487 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:18,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1663334967, now seen corresponding path program 20 times [2020-10-29 09:06:18,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:18,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423076864] [2020-10-29 09:06:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 09:06:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-29 09:06:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:19,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:06:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 09:06:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:20,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:20,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:20,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:20,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:20,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423076864] [2020-10-29 09:06:20,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:20,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 09:06:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453323761] [2020-10-29 09:06:20,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 09:06:20,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:20,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 09:06:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:06:20,544 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 34 states. [2020-10-29 09:06:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:20,764 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2020-10-29 09:06:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 09:06:20,764 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 133 [2020-10-29 09:06:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:20,766 INFO L225 Difference]: With dead ends: 150 [2020-10-29 09:06:20,766 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 09:06:20,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:06:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 09:06:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2020-10-29 09:06:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-29 09:06:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-10-29 09:06:20,774 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 133 [2020-10-29 09:06:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:20,774 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-10-29 09:06:20,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 09:06:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-10-29 09:06:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 09:06:20,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:20,776 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:20,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 09:06:20,776 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 184280738, now seen corresponding path program 21 times [2020-10-29 09:06:20,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:20,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048365216] [2020-10-29 09:06:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:21,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:21,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 09:06:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-29 09:06:21,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:21,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 09:06:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 09:06:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:22,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048365216] [2020-10-29 09:06:22,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:22,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 09:06:22,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150277243] [2020-10-29 09:06:22,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 09:06:22,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 09:06:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:06:22,747 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 35 states. [2020-10-29 09:06:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:23,029 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-10-29 09:06:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 09:06:23,030 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 137 [2020-10-29 09:06:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:23,031 INFO L225 Difference]: With dead ends: 154 [2020-10-29 09:06:23,031 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 09:06:23,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:06:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 09:06:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2020-10-29 09:06:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 09:06:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-10-29 09:06:23,073 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 137 [2020-10-29 09:06:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:23,075 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-10-29 09:06:23,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 09:06:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-10-29 09:06:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 09:06:23,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:23,077 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:23,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 09:06:23,077 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1109511429, now seen corresponding path program 22 times [2020-10-29 09:06:23,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:23,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252260804] [2020-10-29 09:06:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 09:06:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 09:06:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:25,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:25,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:25,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252260804] [2020-10-29 09:06:25,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:25,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 09:06:25,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518325435] [2020-10-29 09:06:25,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 09:06:25,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:25,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 09:06:25,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:06:25,277 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 36 states. [2020-10-29 09:06:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:25,503 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2020-10-29 09:06:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 09:06:25,504 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 141 [2020-10-29 09:06:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:25,506 INFO L225 Difference]: With dead ends: 158 [2020-10-29 09:06:25,507 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 09:06:25,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:06:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 09:06:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2020-10-29 09:06:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 09:06:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-10-29 09:06:25,514 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 141 [2020-10-29 09:06:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:25,515 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-10-29 09:06:25,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 09:06:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-10-29 09:06:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 09:06:25,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:25,516 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:25,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 09:06:25,516 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1671473876, now seen corresponding path program 23 times [2020-10-29 09:06:25,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:25,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011178555] [2020-10-29 09:06:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:26,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:26,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 09:06:26,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-29 09:06:26,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:26,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:06:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 09:06:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:27,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:27,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011178555] [2020-10-29 09:06:27,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:27,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 09:06:27,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024751262] [2020-10-29 09:06:27,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 09:06:27,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:27,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 09:06:27,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:06:27,738 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 37 states. [2020-10-29 09:06:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:27,967 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-10-29 09:06:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 09:06:27,968 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 145 [2020-10-29 09:06:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:27,970 INFO L225 Difference]: With dead ends: 162 [2020-10-29 09:06:27,970 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 09:06:27,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:06:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 09:06:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2020-10-29 09:06:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 09:06:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-10-29 09:06:27,978 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 145 [2020-10-29 09:06:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:27,978 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-10-29 09:06:27,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 09:06:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-10-29 09:06:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 09:06:27,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:27,980 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:27,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 09:06:27,980 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:27,980 INFO L82 PathProgramCache]: Analyzing trace with hash -247362003, now seen corresponding path program 24 times [2020-10-29 09:06:27,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:27,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056861819] [2020-10-29 09:06:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 09:06:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:30,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:30,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:30,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:30,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056861819] [2020-10-29 09:06:30,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:30,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 09:06:30,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855105168] [2020-10-29 09:06:30,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 09:06:30,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:30,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 09:06:30,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:06:30,300 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 38 states. [2020-10-29 09:06:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:30,529 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2020-10-29 09:06:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 09:06:30,531 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 149 [2020-10-29 09:06:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:30,532 INFO L225 Difference]: With dead ends: 166 [2020-10-29 09:06:30,532 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 09:06:30,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:06:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 09:06:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2020-10-29 09:06:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 09:06:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-10-29 09:06:30,540 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 149 [2020-10-29 09:06:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:30,540 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-10-29 09:06:30,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 09:06:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-10-29 09:06:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 09:06:30,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:30,542 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:30,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 09:06:30,542 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash 849288454, now seen corresponding path program 25 times [2020-10-29 09:06:30,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:30,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805099358] [2020-10-29 09:06:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:31,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 09:06:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-29 09:06:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:31,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 09:06:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 09:06:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:06:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:32,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:32,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:32,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:33,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805099358] [2020-10-29 09:06:33,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:33,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 09:06:33,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540908642] [2020-10-29 09:06:33,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 09:06:33,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:33,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 09:06:33,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 09:06:33,017 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 39 states. [2020-10-29 09:06:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:33,288 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2020-10-29 09:06:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 09:06:33,288 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 153 [2020-10-29 09:06:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:33,290 INFO L225 Difference]: With dead ends: 170 [2020-10-29 09:06:33,290 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 09:06:33,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 09:06:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 09:06:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-10-29 09:06:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 09:06:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-10-29 09:06:33,298 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 153 [2020-10-29 09:06:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:33,298 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-10-29 09:06:33,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 09:06:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-10-29 09:06:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 09:06:33,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:33,300 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:33,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 09:06:33,300 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1517786975, now seen corresponding path program 26 times [2020-10-29 09:06:33,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:33,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162424140] [2020-10-29 09:06:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:34,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 09:06:34,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-29 09:06:34,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:34,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 09:06:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 09:06:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:35,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162424140] [2020-10-29 09:06:35,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:35,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 09:06:35,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978965815] [2020-10-29 09:06:35,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 09:06:35,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 09:06:35,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:06:35,985 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 40 states. [2020-10-29 09:06:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:36,279 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2020-10-29 09:06:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 09:06:36,279 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 157 [2020-10-29 09:06:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:36,281 INFO L225 Difference]: With dead ends: 174 [2020-10-29 09:06:36,281 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 09:06:36,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:06:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 09:06:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2020-10-29 09:06:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 09:06:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-10-29 09:06:36,289 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 157 [2020-10-29 09:06:36,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:36,290 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-10-29 09:06:36,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 09:06:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-10-29 09:06:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 09:06:36,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:36,292 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:36,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 09:06:36,292 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:36,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1838596808, now seen corresponding path program 27 times [2020-10-29 09:06:36,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:36,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402401507] [2020-10-29 09:06:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 09:06:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-29 09:06:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 09:06:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 09:06:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:39,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:39,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402401507] [2020-10-29 09:06:39,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:39,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 09:06:39,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535174665] [2020-10-29 09:06:39,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 09:06:39,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:39,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 09:06:39,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 09:06:39,111 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 41 states. [2020-10-29 09:06:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:39,399 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions. [2020-10-29 09:06:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 09:06:39,400 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 161 [2020-10-29 09:06:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:39,402 INFO L225 Difference]: With dead ends: 178 [2020-10-29 09:06:39,403 INFO L226 Difference]: Without dead ends: 170 [2020-10-29 09:06:39,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 09:06:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-29 09:06:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-29 09:06:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 09:06:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-10-29 09:06:39,411 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 161 [2020-10-29 09:06:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:39,411 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-10-29 09:06:39,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 09:06:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-10-29 09:06:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 09:06:39,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:39,413 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:39,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 09:06:39,413 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1963831663, now seen corresponding path program 28 times [2020-10-29 09:06:39,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:39,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098774468] [2020-10-29 09:06:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 09:06:41,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 09:06:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:06:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:42,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098774468] [2020-10-29 09:06:42,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:42,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 09:06:42,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139686229] [2020-10-29 09:06:42,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 09:06:42,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:42,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 09:06:42,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:06:42,381 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 42 states. [2020-10-29 09:06:42,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:42,643 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-10-29 09:06:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 09:06:42,643 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 165 [2020-10-29 09:06:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:42,645 INFO L225 Difference]: With dead ends: 182 [2020-10-29 09:06:42,645 INFO L226 Difference]: Without dead ends: 174 [2020-10-29 09:06:42,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:06:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-29 09:06:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2020-10-29 09:06:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-29 09:06:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-10-29 09:06:42,654 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 165 [2020-10-29 09:06:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:42,654 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-10-29 09:06:42,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 09:06:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-10-29 09:06:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 09:06:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:42,656 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:42,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 09:06:42,656 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash 191957866, now seen corresponding path program 29 times [2020-10-29 09:06:42,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:42,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053272287] [2020-10-29 09:06:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 09:06:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:45,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:45,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:45,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:45,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:45,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:45,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053272287] [2020-10-29 09:06:45,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:45,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 09:06:45,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310627315] [2020-10-29 09:06:45,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 09:06:45,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:45,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 09:06:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:06:45,710 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 43 states. [2020-10-29 09:06:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:46,004 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2020-10-29 09:06:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 09:06:46,004 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 169 [2020-10-29 09:06:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:46,006 INFO L225 Difference]: With dead ends: 186 [2020-10-29 09:06:46,006 INFO L226 Difference]: Without dead ends: 178 [2020-10-29 09:06:46,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:06:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-29 09:06:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2020-10-29 09:06:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 09:06:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-10-29 09:06:46,015 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 169 [2020-10-29 09:06:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:46,015 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-10-29 09:06:46,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 09:06:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-10-29 09:06:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 09:06:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:46,017 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:46,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 09:06:46,017 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2111589437, now seen corresponding path program 30 times [2020-10-29 09:06:46,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:46,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020898290] [2020-10-29 09:06:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:47,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 09:06:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:49,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:49,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:49,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:06:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:49,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:49,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020898290] [2020-10-29 09:06:49,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:49,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 09:06:49,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207106988] [2020-10-29 09:06:49,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 09:06:49,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 09:06:49,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:06:49,281 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 44 states. [2020-10-29 09:06:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:49,595 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2020-10-29 09:06:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 09:06:49,595 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 173 [2020-10-29 09:06:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:49,598 INFO L225 Difference]: With dead ends: 190 [2020-10-29 09:06:49,598 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 09:06:49,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:06:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 09:06:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2020-10-29 09:06:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 09:06:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2020-10-29 09:06:49,607 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 173 [2020-10-29 09:06:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:49,607 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2020-10-29 09:06:49,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 09:06:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2020-10-29 09:06:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 09:06:49,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:49,608 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:49,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 09:06:49,609 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:49,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1809283172, now seen corresponding path program 31 times [2020-10-29 09:06:49,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:49,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223482696] [2020-10-29 09:06:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:51,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1802 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 09:06:51,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:52,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:52,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:52,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:52,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:52,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:52,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223482696] [2020-10-29 09:06:52,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:52,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 09:06:52,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300120323] [2020-10-29 09:06:52,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 09:06:52,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 09:06:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:06:52,966 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 45 states. [2020-10-29 09:06:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:53,337 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2020-10-29 09:06:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 09:06:53,338 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 177 [2020-10-29 09:06:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:53,340 INFO L225 Difference]: With dead ends: 194 [2020-10-29 09:06:53,340 INFO L226 Difference]: Without dead ends: 186 [2020-10-29 09:06:53,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:06:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-29 09:06:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2020-10-29 09:06:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-29 09:06:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-10-29 09:06:53,348 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 177 [2020-10-29 09:06:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:53,348 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-10-29 09:06:53,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 09:06:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-10-29 09:06:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 09:06:53,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:53,350 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:53,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 09:06:53,350 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:53,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1384265995, now seen corresponding path program 32 times [2020-10-29 09:06:53,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:53,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926216163] [2020-10-29 09:06:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1923 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 09:06:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:06:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:56,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926216163] [2020-10-29 09:06:56,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:06:56,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 09:06:56,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241082222] [2020-10-29 09:06:56,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 09:06:56,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 09:06:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 09:06:56,908 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 46 states. [2020-10-29 09:06:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:57,232 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2020-10-29 09:06:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 09:06:57,233 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 181 [2020-10-29 09:06:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:57,234 INFO L225 Difference]: With dead ends: 198 [2020-10-29 09:06:57,235 INFO L226 Difference]: Without dead ends: 190 [2020-10-29 09:06:57,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 09:06:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-29 09:06:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-10-29 09:06:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 09:06:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-10-29 09:06:57,243 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 181 [2020-10-29 09:06:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:57,243 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-10-29 09:06:57,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 09:06:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-10-29 09:06:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 09:06:57,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:57,245 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:57,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 09:06:57,245 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:57,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1862159922, now seen corresponding path program 33 times [2020-10-29 09:06:57,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:57,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360428457] [2020-10-29 09:06:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:59,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1971 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:00,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:00,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:00,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:00,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360428457] [2020-10-29 09:07:00,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:00,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 09:07:00,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216616175] [2020-10-29 09:07:00,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 09:07:00,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:00,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 09:07:00,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 09:07:00,983 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 47 states. [2020-10-29 09:07:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:01,296 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-10-29 09:07:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 09:07:01,297 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 185 [2020-10-29 09:07:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:01,299 INFO L225 Difference]: With dead ends: 202 [2020-10-29 09:07:01,301 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 09:07:01,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 09:07:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 09:07:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2020-10-29 09:07:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-29 09:07:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2020-10-29 09:07:01,309 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 185 [2020-10-29 09:07:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:01,309 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2020-10-29 09:07:01,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 09:07:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2020-10-29 09:07:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 09:07:01,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:01,311 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:01,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 09:07:01,311 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:01,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash -395147225, now seen corresponding path program 34 times [2020-10-29 09:07:01,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:01,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838496073] [2020-10-29 09:07:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 09:07:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2251 [2020-10-29 09:07:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:03,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 09:07:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 09:07:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:05,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:05,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:05,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838496073] [2020-10-29 09:07:05,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:05,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 09:07:05,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783013969] [2020-10-29 09:07:05,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 09:07:05,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:05,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 09:07:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:07:05,337 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 48 states. [2020-10-29 09:07:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:05,663 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2020-10-29 09:07:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 09:07:05,664 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 189 [2020-10-29 09:07:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:05,665 INFO L225 Difference]: With dead ends: 206 [2020-10-29 09:07:05,666 INFO L226 Difference]: Without dead ends: 198 [2020-10-29 09:07:05,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:07:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-29 09:07:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2020-10-29 09:07:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-29 09:07:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2020-10-29 09:07:05,673 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 189 [2020-10-29 09:07:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:05,674 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2020-10-29 09:07:05,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 09:07:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2020-10-29 09:07:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 09:07:05,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:05,675 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:05,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 09:07:05,676 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:05,676 INFO L82 PathProgramCache]: Analyzing trace with hash -730953216, now seen corresponding path program 35 times [2020-10-29 09:07:05,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:05,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963946782] [2020-10-29 09:07:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 09:07:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:09,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:09,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963946782] [2020-10-29 09:07:09,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:09,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 09:07:09,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170119985] [2020-10-29 09:07:09,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 09:07:09,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 09:07:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 09:07:09,908 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 49 states. [2020-10-29 09:07:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:10,303 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2020-10-29 09:07:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 09:07:10,304 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 193 [2020-10-29 09:07:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:10,305 INFO L225 Difference]: With dead ends: 210 [2020-10-29 09:07:10,305 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 09:07:10,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 09:07:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 09:07:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2020-10-29 09:07:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-29 09:07:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2020-10-29 09:07:10,313 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 193 [2020-10-29 09:07:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:10,313 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2020-10-29 09:07:10,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 09:07:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2020-10-29 09:07:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 09:07:10,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:10,315 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:10,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 09:07:10,315 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash 2087974745, now seen corresponding path program 36 times [2020-10-29 09:07:10,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:10,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680494291] [2020-10-29 09:07:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2173 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 09:07:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:14,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:14,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:14,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680494291] [2020-10-29 09:07:14,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:14,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 09:07:14,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482893007] [2020-10-29 09:07:14,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 09:07:14,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 09:07:14,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 09:07:14,468 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 50 states. [2020-10-29 09:07:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:14,757 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2020-10-29 09:07:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 09:07:14,758 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 197 [2020-10-29 09:07:14,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:14,759 INFO L225 Difference]: With dead ends: 214 [2020-10-29 09:07:14,760 INFO L226 Difference]: Without dead ends: 206 [2020-10-29 09:07:14,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 09:07:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-29 09:07:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2020-10-29 09:07:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-29 09:07:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2020-10-29 09:07:14,767 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 197 [2020-10-29 09:07:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:14,768 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2020-10-29 09:07:14,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 09:07:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2020-10-29 09:07:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-29 09:07:14,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:14,769 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:14,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 09:07:14,769 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1629417422, now seen corresponding path program 37 times [2020-10-29 09:07:14,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:14,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305636606] [2020-10-29 09:07:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:14,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 09:07:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 09:07:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:19,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305636606] [2020-10-29 09:07:19,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:19,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 09:07:19,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028009343] [2020-10-29 09:07:19,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 09:07:19,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:19,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 09:07:19,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 09:07:19,320 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 51 states. [2020-10-29 09:07:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:19,734 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2020-10-29 09:07:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 09:07:19,735 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 201 [2020-10-29 09:07:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:19,736 INFO L225 Difference]: With dead ends: 218 [2020-10-29 09:07:19,736 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 09:07:19,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 09:07:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 09:07:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2020-10-29 09:07:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 09:07:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2020-10-29 09:07:19,743 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 201 [2020-10-29 09:07:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:19,744 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2020-10-29 09:07:19,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 09:07:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2020-10-29 09:07:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 09:07:19,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:19,745 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:19,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 09:07:19,745 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:19,746 INFO L82 PathProgramCache]: Analyzing trace with hash 552866955, now seen corresponding path program 38 times [2020-10-29 09:07:19,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:19,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885132938] [2020-10-29 09:07:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:19,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 09:07:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 09:07:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:24,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:24,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:24,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:24,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:24,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885132938] [2020-10-29 09:07:24,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:24,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 09:07:24,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790338182] [2020-10-29 09:07:24,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 09:07:24,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:24,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 09:07:24,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:07:24,256 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 52 states. [2020-10-29 09:07:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:24,624 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-10-29 09:07:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 09:07:24,625 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 205 [2020-10-29 09:07:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:24,627 INFO L225 Difference]: With dead ends: 222 [2020-10-29 09:07:24,627 INFO L226 Difference]: Without dead ends: 214 [2020-10-29 09:07:24,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:07:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-29 09:07:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2020-10-29 09:07:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 09:07:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2020-10-29 09:07:24,634 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 205 [2020-10-29 09:07:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:24,634 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2020-10-29 09:07:24,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 09:07:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2020-10-29 09:07:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 09:07:24,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:24,636 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:24,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 09:07:24,636 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:24,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1630845852, now seen corresponding path program 39 times [2020-10-29 09:07:24,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:24,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083870672] [2020-10-29 09:07:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:27,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:27,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2461 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 09:07:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:29,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:29,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:29,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:29,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083870672] [2020-10-29 09:07:29,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:29,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 09:07:29,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997510874] [2020-10-29 09:07:29,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 09:07:29,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:29,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 09:07:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 09:07:29,333 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 53 states. [2020-10-29 09:07:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:29,725 INFO L93 Difference]: Finished difference Result 226 states and 228 transitions. [2020-10-29 09:07:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 09:07:29,726 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 209 [2020-10-29 09:07:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:29,728 INFO L225 Difference]: With dead ends: 226 [2020-10-29 09:07:29,728 INFO L226 Difference]: Without dead ends: 218 [2020-10-29 09:07:29,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 09:07:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-29 09:07:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2020-10-29 09:07:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 09:07:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2020-10-29 09:07:29,736 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 209 [2020-10-29 09:07:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:29,737 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2020-10-29 09:07:29,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 09:07:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2020-10-29 09:07:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 09:07:29,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:29,738 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:29,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 09:07:29,738 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash -77275203, now seen corresponding path program 40 times [2020-10-29 09:07:29,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:29,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38494752] [2020-10-29 09:07:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 09:07:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:34,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:34,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:34,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38494752] [2020-10-29 09:07:34,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:34,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 09:07:34,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502869792] [2020-10-29 09:07:34,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 09:07:34,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:34,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 09:07:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 09:07:34,682 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 54 states. [2020-10-29 09:07:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:35,107 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2020-10-29 09:07:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 09:07:35,108 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 213 [2020-10-29 09:07:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:35,110 INFO L225 Difference]: With dead ends: 230 [2020-10-29 09:07:35,110 INFO L226 Difference]: Without dead ends: 222 [2020-10-29 09:07:35,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 09:07:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-29 09:07:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2020-10-29 09:07:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 09:07:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2020-10-29 09:07:35,115 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 213 [2020-10-29 09:07:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:35,116 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2020-10-29 09:07:35,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 09:07:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2020-10-29 09:07:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 09:07:35,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:35,117 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:35,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 09:07:35,118 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:35,118 INFO L82 PathProgramCache]: Analyzing trace with hash -258005354, now seen corresponding path program 41 times [2020-10-29 09:07:35,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:35,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052021538] [2020-10-29 09:07:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2776 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 09:07:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:40,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:40,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:40,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:40,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:40,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:40,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052021538] [2020-10-29 09:07:40,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:40,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 09:07:40,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957736611] [2020-10-29 09:07:40,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 09:07:40,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:40,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 09:07:40,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 09:07:40,298 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 55 states. [2020-10-29 09:07:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:40,714 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2020-10-29 09:07:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 09:07:40,714 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 217 [2020-10-29 09:07:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:40,716 INFO L225 Difference]: With dead ends: 234 [2020-10-29 09:07:40,716 INFO L226 Difference]: Without dead ends: 226 [2020-10-29 09:07:40,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 09:07:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-29 09:07:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2020-10-29 09:07:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-29 09:07:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2020-10-29 09:07:40,723 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 217 [2020-10-29 09:07:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:40,724 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2020-10-29 09:07:40,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 09:07:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2020-10-29 09:07:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 09:07:40,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:40,725 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:40,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 09:07:40,725 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:40,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1623697169, now seen corresponding path program 42 times [2020-10-29 09:07:40,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:40,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021657980] [2020-10-29 09:07:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:43,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 09:07:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:45,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021657980] [2020-10-29 09:07:45,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:45,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 09:07:45,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186587680] [2020-10-29 09:07:45,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 09:07:45,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 09:07:45,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 09:07:45,963 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 56 states. [2020-10-29 09:07:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:46,413 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2020-10-29 09:07:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 09:07:46,414 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 221 [2020-10-29 09:07:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:46,416 INFO L225 Difference]: With dead ends: 238 [2020-10-29 09:07:46,416 INFO L226 Difference]: Without dead ends: 230 [2020-10-29 09:07:46,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 09:07:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-29 09:07:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2020-10-29 09:07:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 09:07:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2020-10-29 09:07:46,422 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 221 [2020-10-29 09:07:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:46,423 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2020-10-29 09:07:46,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 09:07:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2020-10-29 09:07:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 09:07:46,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:46,424 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:46,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 09:07:46,425 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash 516863688, now seen corresponding path program 43 times [2020-10-29 09:07:46,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:46,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956257854] [2020-10-29 09:07:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3000 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-29 09:07:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:51,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:51,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956257854] [2020-10-29 09:07:51,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:51,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 09:07:51,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747043452] [2020-10-29 09:07:51,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 09:07:51,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:51,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 09:07:51,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 09:07:51,978 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 57 states. [2020-10-29 09:07:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:52,461 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-10-29 09:07:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 09:07:52,462 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 225 [2020-10-29 09:07:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:52,464 INFO L225 Difference]: With dead ends: 242 [2020-10-29 09:07:52,464 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 09:07:52,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 09:07:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 09:07:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2020-10-29 09:07:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 09:07:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2020-10-29 09:07:52,471 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 225 [2020-10-29 09:07:52,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:52,471 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2020-10-29 09:07:52,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 09:07:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2020-10-29 09:07:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 09:07:52,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:52,473 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:52,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 09:07:52,473 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:52,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:52,474 INFO L82 PathProgramCache]: Analyzing trace with hash 232816673, now seen corresponding path program 44 times [2020-10-29 09:07:52,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:52,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762772077] [2020-10-29 09:07:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:52,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3267 [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 09:07:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 09:07:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:07:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:58,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:58,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:58,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:58,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:58,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:58,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762772077] [2020-10-29 09:07:58,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:07:58,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 09:07:58,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21281178] [2020-10-29 09:07:58,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 09:07:58,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:58,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 09:07:58,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 09:07:58,362 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 58 states. [2020-10-29 09:07:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:58,861 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2020-10-29 09:07:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 09:07:58,862 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 229 [2020-10-29 09:07:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:58,865 INFO L225 Difference]: With dead ends: 246 [2020-10-29 09:07:58,865 INFO L226 Difference]: Without dead ends: 238 [2020-10-29 09:07:58,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 09:07:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-29 09:07:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 235. [2020-10-29 09:07:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-29 09:07:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2020-10-29 09:07:58,873 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 229 [2020-10-29 09:07:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:58,901 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2020-10-29 09:07:58,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 09:07:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2020-10-29 09:07:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 09:07:58,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:58,903 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:58,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 09:07:58,903 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:58,904 INFO L82 PathProgramCache]: Analyzing trace with hash 567014650, now seen corresponding path program 45 times [2020-10-29 09:07:58,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:58,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037734199] [2020-10-29 09:07:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-29 09:08:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:04,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:04,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037734199] [2020-10-29 09:08:04,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:04,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-29 09:08:04,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310033403] [2020-10-29 09:08:04,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-29 09:08:04,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-29 09:08:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 09:08:04,798 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 59 states. [2020-10-29 09:08:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:05,272 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2020-10-29 09:08:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 09:08:05,273 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 233 [2020-10-29 09:08:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:05,275 INFO L225 Difference]: With dead ends: 250 [2020-10-29 09:08:05,275 INFO L226 Difference]: Without dead ends: 242 [2020-10-29 09:08:05,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 09:08:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-29 09:08:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 239. [2020-10-29 09:08:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-29 09:08:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2020-10-29 09:08:05,283 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 233 [2020-10-29 09:08:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:05,283 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2020-10-29 09:08:05,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-29 09:08:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2020-10-29 09:08:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 09:08:05,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:05,285 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:05,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 09:08:05,285 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1227926189, now seen corresponding path program 46 times [2020-10-29 09:08:05,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:05,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219420343] [2020-10-29 09:08:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:08,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:08,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3245 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 09:08:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:11,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:11,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219420343] [2020-10-29 09:08:11,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:11,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 09:08:11,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319804116] [2020-10-29 09:08:11,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 09:08:11,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:11,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 09:08:11,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 09:08:11,363 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 60 states. [2020-10-29 09:08:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:11,866 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2020-10-29 09:08:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 09:08:11,867 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 237 [2020-10-29 09:08:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:11,869 INFO L225 Difference]: With dead ends: 254 [2020-10-29 09:08:11,869 INFO L226 Difference]: Without dead ends: 246 [2020-10-29 09:08:11,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 09:08:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-29 09:08:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2020-10-29 09:08:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 09:08:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2020-10-29 09:08:11,874 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 237 [2020-10-29 09:08:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:11,875 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2020-10-29 09:08:11,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 09:08:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2020-10-29 09:08:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 09:08:11,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:11,877 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:11,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-29 09:08:11,877 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1611194668, now seen corresponding path program 47 times [2020-10-29 09:08:11,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:11,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724139070] [2020-10-29 09:08:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:15,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3344 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-29 09:08:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:18,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:18,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:08:18,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:18,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:18,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724139070] [2020-10-29 09:08:18,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:18,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-29 09:08:18,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814243284] [2020-10-29 09:08:18,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-29 09:08:18,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:18,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-29 09:08:18,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 09:08:18,144 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 61 states. [2020-10-29 09:08:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:18,556 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2020-10-29 09:08:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 09:08:18,556 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 241 [2020-10-29 09:08:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:18,558 INFO L225 Difference]: With dead ends: 258 [2020-10-29 09:08:18,559 INFO L226 Difference]: Without dead ends: 250 [2020-10-29 09:08:18,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 09:08:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-29 09:08:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2020-10-29 09:08:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-29 09:08:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2020-10-29 09:08:18,565 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 241 [2020-10-29 09:08:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:18,565 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2020-10-29 09:08:18,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-29 09:08:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2020-10-29 09:08:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 09:08:18,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:18,567 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:18,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-29 09:08:18,567 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2004277381, now seen corresponding path program 48 times [2020-10-29 09:08:18,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:18,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186883344] [2020-10-29 09:08:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:22,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3470 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 09:08:22,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:25,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:25,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:25,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:25,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:25,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:25,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186883344] [2020-10-29 09:08:25,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:25,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-29 09:08:25,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446021679] [2020-10-29 09:08:25,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-29 09:08:25,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:25,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-29 09:08:25,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 09:08:25,165 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 62 states. [2020-10-29 09:08:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:25,691 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-10-29 09:08:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-29 09:08:25,691 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 245 [2020-10-29 09:08:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:25,694 INFO L225 Difference]: With dead ends: 262 [2020-10-29 09:08:25,694 INFO L226 Difference]: Without dead ends: 254 [2020-10-29 09:08:25,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 09:08:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-29 09:08:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2020-10-29 09:08:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-29 09:08:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2020-10-29 09:08:25,702 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 245 [2020-10-29 09:08:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:25,702 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2020-10-29 09:08:25,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-29 09:08:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2020-10-29 09:08:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 09:08:25,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:25,704 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:25,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-29 09:08:25,704 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1376289954, now seen corresponding path program 49 times [2020-10-29 09:08:25,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:25,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952020057] [2020-10-29 09:08:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3614 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 09:08:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:32,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:32,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:32,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952020057] [2020-10-29 09:08:32,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:32,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-29 09:08:32,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421319564] [2020-10-29 09:08:32,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-29 09:08:32,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-29 09:08:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 09:08:32,478 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 63 states. [2020-10-29 09:08:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:32,903 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2020-10-29 09:08:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 09:08:32,903 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 249 [2020-10-29 09:08:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:32,905 INFO L225 Difference]: With dead ends: 266 [2020-10-29 09:08:32,906 INFO L226 Difference]: Without dead ends: 258 [2020-10-29 09:08:32,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 09:08:32,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-29 09:08:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2020-10-29 09:08:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-29 09:08:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2020-10-29 09:08:32,913 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 249 [2020-10-29 09:08:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:32,914 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2020-10-29 09:08:32,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-29 09:08:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2020-10-29 09:08:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 09:08:32,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:32,915 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:32,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-29 09:08:32,916 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:32,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1689712201, now seen corresponding path program 50 times [2020-10-29 09:08:32,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:32,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925767605] [2020-10-29 09:08:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:36,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:36,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 09:08:36,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3789 [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 09:08:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:39,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:39,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:39,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:39,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925767605] [2020-10-29 09:08:39,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:39,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-29 09:08:39,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191984082] [2020-10-29 09:08:39,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-29 09:08:39,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:39,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-29 09:08:39,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 09:08:39,973 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 64 states. [2020-10-29 09:08:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:40,537 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2020-10-29 09:08:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-29 09:08:40,538 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 253 [2020-10-29 09:08:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:40,540 INFO L225 Difference]: With dead ends: 270 [2020-10-29 09:08:40,540 INFO L226 Difference]: Without dead ends: 262 [2020-10-29 09:08:40,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 09:08:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-29 09:08:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2020-10-29 09:08:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-29 09:08:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2020-10-29 09:08:40,547 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 253 [2020-10-29 09:08:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:40,548 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2020-10-29 09:08:40,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-29 09:08:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2020-10-29 09:08:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 09:08:40,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:40,550 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:40,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-29 09:08:40,550 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:40,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1309262736, now seen corresponding path program 51 times [2020-10-29 09:08:40,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:40,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771381875] [2020-10-29 09:08:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3992 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-29 09:08:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:47,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771381875] [2020-10-29 09:08:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:47,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-29 09:08:47,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101306738] [2020-10-29 09:08:47,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-29 09:08:47,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:47,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-29 09:08:47,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 09:08:47,987 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 65 states. [2020-10-29 09:08:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:48,559 INFO L93 Difference]: Finished difference Result 274 states and 276 transitions. [2020-10-29 09:08:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-29 09:08:48,559 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 257 [2020-10-29 09:08:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:48,562 INFO L225 Difference]: With dead ends: 274 [2020-10-29 09:08:48,562 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 09:08:48,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 09:08:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 09:08:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 263. [2020-10-29 09:08:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 09:08:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2020-10-29 09:08:48,568 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 257 [2020-10-29 09:08:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:48,569 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2020-10-29 09:08:48,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-29 09:08:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2020-10-29 09:08:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-29 09:08:48,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:48,570 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:48,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-29 09:08:48,571 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:48,571 INFO L82 PathProgramCache]: Analyzing trace with hash -608704279, now seen corresponding path program 52 times [2020-10-29 09:08:48,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:48,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002305984] [2020-10-29 09:08:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:52,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:52,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 09:08:52,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3869 [2020-10-29 09:08:52,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:52,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-29 09:08:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:08:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 09:08:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:55,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002305984] [2020-10-29 09:08:55,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:08:55,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-29 09:08:55,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577192893] [2020-10-29 09:08:55,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-29 09:08:55,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:55,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-29 09:08:55,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 09:08:55,960 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 66 states. [2020-10-29 09:08:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:56,538 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2020-10-29 09:08:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-29 09:08:56,539 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 261 [2020-10-29 09:08:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:56,541 INFO L225 Difference]: With dead ends: 278 [2020-10-29 09:08:56,541 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 09:08:56,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 09:08:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 09:08:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2020-10-29 09:08:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-29 09:08:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2020-10-29 09:08:56,549 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 261 [2020-10-29 09:08:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:56,549 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2020-10-29 09:08:56,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-29 09:08:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2020-10-29 09:08:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 09:08:56,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:56,551 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:56,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-29 09:08:56,552 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash -256788030, now seen corresponding path program 53 times [2020-10-29 09:08:56,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:56,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396690538] [2020-10-29 09:08:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3993 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-29 09:09:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:04,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:09:04,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396690538] [2020-10-29 09:09:04,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:09:04,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-29 09:09:04,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582042674] [2020-10-29 09:09:04,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-29 09:09:04,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:04,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-29 09:09:04,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 09:09:04,213 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 67 states. [2020-10-29 09:09:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:04,774 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2020-10-29 09:09:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-29 09:09:04,775 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 265 [2020-10-29 09:09:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:04,777 INFO L225 Difference]: With dead ends: 282 [2020-10-29 09:09:04,777 INFO L226 Difference]: Without dead ends: 274 [2020-10-29 09:09:04,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 09:09:04,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-29 09:09:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2020-10-29 09:09:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-29 09:09:04,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2020-10-29 09:09:04,785 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 265 [2020-10-29 09:09:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:04,785 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2020-10-29 09:09:04,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-29 09:09:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2020-10-29 09:09:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-29 09:09:04,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:04,787 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:09:04,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-29 09:09:04,787 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:04,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1614116379, now seen corresponding path program 54 times [2020-10-29 09:09:04,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:04,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502550982] [2020-10-29 09:09:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:09,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:09,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 09:09:09,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4244 [2020-10-29 09:09:09,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:09,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-29 09:09:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:09:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 09:09:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0